I. Choose the letter A, B, C or D to complete the sentences with given words If/ people/ breath/ contaminate/ air, they/ have/ breathing problems A. If people breathed contaminated air, they had breathing problems. B. If people breathed contaminated air, they would have breathing problems. C. If people breath contaminated air, they have breathing problems. D. If people breath contaminated air, they will have breathing problems. 2: Many/ people/ this area/ have/ cholera/ because/ they/ drink/ untreat/ water. A. Many people in this area have cholera because they drink untreated water. B. Many people on this area have cholera because they drink untreated water. C. Many people on this area have cholera because they drink untreating water. D. Many people in this area have cholera because they drink untreating water. 3: The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish. A. The street not look attractive because there’s a lot of rubbish. B. The street not look attractive because there’re a lot of rubbish. C. The street doesn’t look attractive because there’s a lot of rubbish. D. The street don’t look attractive because there’re a lot of rubbish. 4:A lot of/ people/ be/ injured/ the/ earthquake. A. A lot of people were injured in the earthquake. B. A lot of people were injured on the earthquake. C. A lot of people were injured at the earthquake. D. A lot of people were injured for the earthquake. 5. I/ look forward to/ hear/ you/ soon. A. I am looking forward to hearing from you soon. B. I am looking forward to hear from you soon. C. So am I looking forward to hear from you soon. D. I look forward to hear from you soon. 6. Tsunamis/ also/ refer/ the public/ tidal waves. A. Tsunamis also referred to the public as tidal waves. B. Tsunamis also refer to the public as tidal waves. C. Tsunamis is also referred as the public as tidal waves. D. Tsunamis are also referred to the public as tidal waves. 7.If/ people/ breath/ contaminate/ air, they/ have/ breathing problems A. If people breathed contaminated air, they had breathing problems. B. If people breathed contaminated air, they would have breathing problems. C. If people breath contaminated air, they have breathing problems. D. If people breath contaminated air, they will have breathing problems. 8.We/ to/ called/ take/ ambulance/ to/ the/ the/ injured/ hospital/ the. A. We called the ambulance to take the injured to the hospital. B. We called the ambulance take to the injured to the hospital. C. We called the ambulance to take injured the to the hospital. D. We called the ambulance take to injured the to the hospital

They last talked to each other two months ago. They haven’t __________________________________________________________ The last time she saw her elder sister was in 1999. She hasn’t ____________________________________________________________ This is the fìrst time I have seen this fìlm. I have never __________________________________________________________ This is the first time he went abroad. He hasn’t ____________________________________________________________ I last had my hair cut when I left her. I haven’t _____________________________________________________________ The last time she kissed me was 5 months ago. She hasn’t____________________________________________________________ This is the first time I had such a delicious meal . I haven’t____________________________________________________________ I haven’t seen him for 8 days. The last_____________________________________________________________ He last shaved the day before yesterday. He hasn’t _____________________________________________________ I last drank champagne at my brother's wedding. I haven’t ____________________________________________________ I last ate raw fish when I was in Japan. I haven’t ________________________________________________ He last paid taxes in 1970. He hasn’t _______________________________________ I last ate meat 5 years ago. I haven’t ________________________________________ I last watched TV on new years's day. I haven’t __________________________________ The last time I was aboard was in the summer of 1978. I haven’t __________________________________________________________ I haven't seen him for 2 months. I last _____________________________________________________________ I haven't been to a concert for over a year. The last time ____________________________________________________ The last time I really enjoyed myself was your birthday party. I haven’t ________________________________________________________ The last time I went swimming was when we were in Spain. I haven’t ________________________________________________________ We haven’t met Tom since he got married. - We last __________________________________________________ This is the first time I ate this kind of food. - I haven’t __________________________________________________ I’ve never met such a famous singer before. - It’s the __________________________________________________ Linda has been cooking for five hours. - Linda __________________________________________________ The Browns haven’t visited Paris since 1998. - The last time _

1.Cho hai điểm A, D nằm trên cùng một nửa mặt phẳng bờ d, gọi B, C lần lượt là các điểm đối xứng của A qua d, chứng minh rằng ABCD là hình thang cân. 2. Cho hình bình hành ABCD nằm trên một nửa mặt phẳng có bờ là đường thẳng xy, biết tổng các khoảng cách từ A và C đến xy là 10cm. Hãy tính tổng các khoảng cách từ B và D đến xy. 3. Cho hình bình hành ABCD, vẽ hình bình hành ACBE. Gọi F là trung điểm của CD, EF cắt AC tại H của AC. Tính tỉ số AH: AC. giúp mình với mai mình học rồi T_T

Viết 3 câu (khoảng 2-3 dòng trên vở ghi) theo kiểu đưa dẫn chứng trong đoạn văn nghị luận phục vụ cho vấn đề nghị luận về sự tự tin về mỗi nhân vật sau: 1. Walt Disney 2. Nick Vujicicc 3. Helen Keller

HOMEWORK: Bài 2: Điền đạng đúng của động từ trong ngoặc: 1. If it doesn't (rain) _________________, plants cannot grow. 2. If I (try) _________________ to cook, I ruin the food. 3. If you smoke, your skin (age) __________________more quickly. 4. If you heat ice, it (melt) __________________. 5. I feel good if you (visit) ___________________ me regularly. 6. Water evaporates if you (boil) __________________ it. 7. Deren (cycle) ___________________ to work if the weather is good. 8. I feel sick if I (eat) __________________ too much chocolate. 9. You need to take my sister to the hospital if she (drink) ___________________ milk as she is allergic (dị ứng) to it. 10. If Andy (go) __________________ to bed late, he cannot wake up early. Bài 3: Chuyển mệnh đề IF trong các câu sau sang dạng đảo: 1. If I wake up late, I will be late for work. …………………………………………………………………………………………… 2. If my husband cooks, he burns the food. …………………………………………………………………………………………… 3. If Julie doesn't wear a hat, she will get sunstroke. …………………………………………………………………………………………… 4. If she doesn't eat well, she will tired. …………………………………………………………………………………………… 5. If you mix water and electricity, you get a shock. …………………………………………………………………………………………… 6. If people eat too many sweets, they get fat. …………………………………………………………………………………………… 7. If you smoke , you get yellow fingers. …………………………………………………………………………………………… 8. If children don’t play outside, they will get overweight …………………………………………………………………………………………… mong các bạn giúp

giúp với :////////////////////////

cho tam giác ABC vuông ở A , đường cao AH. M và N là chân đường vuông góc kẻ từ H đến AB,AC a) CM : TỨ GIÁC AMHN LÀ HÌNH CHỮNHAJAT b) CM : AH . AH =BH.CH VÀ AH.BC=AB.AC c) CHO AB=8CM , AC=6CM TÍNH DIỆN TÍCH TAM GIÁC AMN GIẢI HỘ E VS Ạ

Gạch dưới các từ láy có trong đoạn văn sau và xếp chúng vào nhóm thích hợp: Đêm về khuya lặng gió. Sương phủ trắng mặt sông. Những bầy cá nhao lên đớp sương tom tóp, lúc đầu còn loáng thoáng, dần dần tiếng tũng toắng xôn xao quanh mạn thuyền. a) Từ láy có hai tiếng giống nhau ở âm đầu: b) Từ láy có hai tiếng giống nhau ở vần: a) Từ láy có hai tiếng giống nhau ở cả âm đầu và vần: giúp mik với nhanh nhé các bạn

Viết 1 đoạn văn có sử dụng những đơn vị kiến thức đã học ở lớp 7 giúp vs cần gấp

Làm ơn giúp mình với ạ, mình đang cần gấp