11. While you _________ around the Dungeon, watch out for creepy creatures – the Dungeon employs actors to give its visitors the fright of their lives. A. are walking B. walks C. have walked D. walked 12. Passengers _________ to smoke in the train. A. are not allowed B. had not allowed C. has not allowed D. will not allow 13. What is the name of the most famous clock in Britain? A. Big Clock B.Big John C. Big Apple D. Big Ben 14. _________ London? It has been ranked as the most popular city on the planet. A. Do you visit B. Are you C. Have you ever been D. Have you ever visited 15. Which countries speak English as an official language? A. Korea, China B.England, Australia C. the USA, Singapore D. Both B and C 16. Coming to New Zealand, you will be surprised by its many ___________ views. A. breath-taking B. taking-breath C. breath-take D. take-breath 17. The Statue of Liberty in Upper New York Bay of America __________ the freedom. A. Presents B. Shows C. symbolizes D. reveals 18. Singapore is an ideal destination for worldwide visitors because of its many _________. A. tour attractions B. attraction tours C. attractive tours D. tourist attractions 19. Some beauty spots in this city _________ reconstructed to attract more visitors. A. has been B. have been C. will have D. will been 20. This annual festival ____________ at the end of March. A. will hold B. will be held C. holds D. is held help me

diện tích mảnh đất thứ nhất bằng 3/5 diện tích mảnh đất thứ hai và kém mảnh đất thứ hai 43,8m2 . Tìm diện tích mỗi mảnh đất ?

Nhờ làm hộ mình với mình cho 5sao

jup mik nhé mik hứa vote 5 sao LÀM ƠN ĐÓ

Exercise 3: Put the verbs in brackets: Present perfect or present perfect progressive. (2) 1. You took tired. (you/study) ......................................... hard? 2. Mr. Brown is new here, isn’t he? How long (he/work) ......................................... for the company? 3. I (lose) ......................................... my wallet. Have you seen it anywhere? 4. I (read) ......................................... the magazine you lent me, but I (not/finish) ......................................... yet. 5. (you/hear) ................................... the bad news? Simon (break) ................................... his leg! 6. John (write) ................................... his novel since last year. He ................................... the first three chapters. 7. What (you/do) ........................................ I (wait) ........................................ for you for an hour. 8. The painters (paint) ......................................... the town hall since February. They ......................................... (paint) nearly half of it now. 9. I (know) ......................................... Louise for ten years. 10. Mr. Brown (mark) ........................................ the exams all morning, but he (not/read) ........................................ them all. Exercise 4: Choose the best option to complete the sentence. 1. She can’t come to the phone now because she ..................... tomorrow’s test. A. studies B. is studying C. has studied D. has been studying 2. They must be at the sports ground now. They usually ..................... basketball on Fridays. A. play B. are playing C. have played D. have been playing 3. I ..................... my work already. I’m ready to go for a walk with you. A. finish B. am finishing C. have finished D. have been finishing 4. I ..................... breakfast right now. Can you call a tittle later? A. cook B. am cooking C. have cooked D. have been cooking 5. I ..................... this book. Can I borrow it tor a week or so? A. don’t read B. am not reading C. haven’t read D. haven’t been reading 6. Maria is good at languages. She ..................... French, Spanish and German. A. speaks B. is speaking C. has spoken D. has been speaking 7. So far, he ..................... five stories for children. A. writes B. is writing C. has written D. has writing 8. We ..................... for their answer for two months already A. wait B. are waiting C. have been waited D. have been waiting 9. She ..................... since Monday. A. is sick B. is being sick C. has been sick D. has been being sick 10. She ..................... since noon. Should we wake her up? A. sleeps B. is sleeping C. has been sleep D. has been sleeping Jup đc bao nhiêu thì jup nha các bn ! :>>

(-37)+14+26+37 tính hợp lí nha

giúp mình nha , bài không đến nỗi khó lắm đâu Complete the email with suitable verbs in the correct form: present simple, present continuous, past simple or past continuous.Hi Anita, Thanks for the text you sent yesterday. I (2)……………. to feel better now although my back still (3) ……………...if I (4)………………….. too far. Last night I (5)…………………. some friends who (6)………………….. dinner near here. I (7……………………..) to the cafe quite easily, but while I (8)……………………. home, my back (9)……………………. to ache really badly. So today I……………………... (10) more careful. Remember that great song we heard during Laura’s birthday meal? Well, I finally……………….. (11) to find out who sings it! They have a concert next month if you (12) ………………………...to go together? You could invite John too – I know you (13) ………………………………..for a thank-you gif for him. I must lie down now because my back (14)…………………….. to hurt again. Come and see me soon. I’m OK, but you know me, I (15) ………………….bored very quickly! Love, Alice

7. Cho nguyên tử A có cấu tạo nguyên tử ở chu kỳ 3, có 2 electron trong nguyên tử là 12. Hãy xác định vị trí và tính chất của nguyên tố A.

Chọn ngẫu nhiên một số từ tập các số tự nhiêncó ba chữ số đôi một khác nhau. Xác suất để số được chọn có tổng các chữ số là bằng chẵn là?

Rút gọn phân số 3.8 phần 16.9