cách chứng minh 3 điểm thẳng hàng thì có những cách nào để chứng minh?

Exercise 2 : Choose the best answer 1. Andrew has just started evening classes. He ................. German. A. are learning B. is learning C. am learning D. learning 2. The workers ................................a new house right now. A. are building B. am building C. is building D. build 3. Tom ............................. two poems at the moment? A. are writing B. are writeing C.is writeing D. is writing 4. The chief engineer .................................... all the workers of the plant now. A. is instructing B. are instructing C. instructs D. instruct 5. He .......................... his pictures at the moment. A. isn’t paint B. isn’t painting C. aren’t painting D. don’t painting 6. We ...............................the herbs in the garden at present. A. don’t plant B. doesn’t plant C. isn’t planting D. aren’t planting 7. They ........................ the artificial flowers of silk now? A. are.......... makeing B. are......... making C. is........... making D. is ........... making 8. Your father ...............................your motorbike at the moment. A. is repairing B. are repairing C. don’t repair D. doesn’t repair 9. Look! The man ......................... the children to the cinema. A. is takeing B. are taking C. is taking D. are takeing 10. Listen! The teacher.......................a new lesson to us. A. is explaining B. are explaining C. explain D. explains 11. They ………… …….. tomorrow. A. are coming B. is coming C. coming D. comes 12. I............in the room now. A. am being B. was being C. have been being D. am 13. Listen! …………….he singing in the bathroom? A.Does B. Is C. Do D. Are 14. She ………………… English at the moment. A. study B. is studying C. studies D. studying 15. He is always…………… noisy at night. A. making B.made C. makes D.is makes

7. David is good ................... . Math. 8. What do you do ............. your free time? 9. Are you interested ............. . sports?. 10. There's a good film ............. . ......... the moment. 11. Thanks .......... . your letter.

Exercise 1 : Give the correct form of the words 1. John (not read) ________ a book now. 2. What you (do) ________ tonight? 3. Jack and Peter (work) ________ late today. 4. Silvia (not listen) ________ to music at the moment. 5. Maria (sit) ________ next to Paul right now. 6. How many other students ……… you (study) ________ with today? 7. He always (make) ________ noisy at night. 8. Where your husband (be) ________? 9. She (wear) ________ earrings today. 10. The weather (get) ________ cold this season. 11. My children (be)________ upstairs now. They (play)________ games. 12. Look! The bus (come)________. 13. At the moment, my sisters (play) ____________ volleyball and my brother (play) ______________soccer. 14. ______________ you (play)_________________badminton now? 15. Tommy (clean) _____ his house and his father (repair) _____ their old car at the moment.

Dòng dưới đây được gọi là gì x+2=4 A.Biểu thức B.Tìm x C.Đẳng thức D.Đáp án khác Đag làm bài kiểm trả, juppppppp

em hãy viết một đoạn văn nghị luận (khoảng 2/3 trang giấy thi) để làm sáng tỏ nhận định: Chuyện ta cần làm trong đời không phải vượt lên trên người khác mà là vượt lên trên chính bản thân mình. (Qua hiện tượng trên, có thể bàn về các vấn đề: Lòng nhân ái; Lối sống đẹp, quên mình vì người khác; Sống tử tế…)

trừ cái phân thức này hộ mình ạ

Sục 3,36 lít khí CO2 vào dung dịch 200 ml dung dịch NaOH 1M .Tính CM của các chất có trong dung dịch sau phản ứng .Giả thiết thể tích dung dịch không đổi trong quá trình phản ứng

mik cần gấp ạ, làm hết theo đáp án của các bn nhó:))

Điền giới từ 7. David is good ................... . Math. 8. What do you do ............. your free time? 9. Are you interested ............. . sports?. 10. There's a good film ............. . ......... the moment. 11. Thanks .......... . your letter.