1 bao xi măng nặng 50kg , 1 bao cát nặng 32kg . Vậy để 5 bao cát nặng bằng 4 bao xi măng ta phải thêm .....kg ?

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I. Choose the correct answer A, B, C or D to complete each sentence. 1. Remember not to park in front of a zebra…………….. A. crossing B. cross C. crossed D. across 2. …………….we lost the game, we were happy that we played well. A. Although B. Because C. If D. Nevertheless 3. We………..drink water from the tap without boiling it first. A. never should B. should never C. should not to D. not should 5. “Recycling” means creating new products from…………….materials. A. use B. using C. used D. to use 7. Drinking and driving of one of the most common……………….of traffic accidents. A. reasons B. effects C. sources D. causes 8. Solar energy - one type…………………sources – is being used more and more. A. renewable B. non-renewable C. renewing D. renewed 9. –“Does that red motorbike belong to your mother?” - “No, ………………….is white.” A. she B. her C. hers D. mine 10. Overpopulation causes a lot of problems,………..? A. isn’t it B. doesn’t it C. do they D. don’t they 11.Nuclear power ...............................in the future. A. will replace B. replaced C. will be replaced D. replaces 12.My father .............a lot last year, but this year he doesn’t any more. A. smokes B. used to smoke C. smoking D. gets used to smoke 13.It’s really difficult to .......................a bicycle up the hill A. fly B. drive C. pedal D. sail 14.At this time next week, we .................a test on sources of energy A. will take B. take C. will be taking D. are taking 15.My children often sleep while they are ................a plane. A. in B. on C. by D. 0 16............books are here. ..............are there. A.Theirs / ours B. Their / our C. Theirs / our D. Their / ours II. Finish the second sentence in each pair, so that it has similar meaning to the first one, using the beginning given and the word in capital letters. 1. Taking photographs inside the museum is forbidden. (NOT) You ………………………………………………………………. 2. One Saturday night, the roads to the city center are very busy. (TRAFFIC) There is……………………………………………………………. 3. Do you find it easy to make friends? (GOOD) Are you……………………………………………………………?

Exercise 1 1. The wedding party________ at the Rex Hotel. a. is b. is being c. will be d. is going to be 2. How many languages_____ John speak? a. do b. does c. did d. will 3. Hurry! The train________ I don't want to miss it. a. comes b. is coming c. came d. has come 4. Angelina Jolie is a famous actress. She ________ in several film. a. appears b. is appearing c. appeared d. has appeared 5. I saw Maggie at the party. She ________ in several film. a. wears b. wore c. was wearing d. has worn 6. What time________ the next train leave? a. does b. will c. shall d. would 7. Monica________ with her sister at the moment until she finds a flat. a. stays b. is staying c. will stay d. is going to stay 8. After I________ lunch, I looked for my bag. a. had b. had had c. have has d. have had 9. By the end of next year, George________ English for 2 years. a. will have learned b. will learn c. has leaned d. would learn 10. The man got out of the car,_______ round to the back and opened the boot. a. walking b. walked c. walks d. walk 11. For several years his ambition ________ to be a pilot. a. is b. has been c. was d. had been 12. Henry________ into the restaurant when the writer was having dinner. a. was going b. went c. has gone d. did go 13. He will take the dog out for a walk as soon as he ________ dinner. a. finish b. finishes c. will finish d. shall have finished 14. Before you asked, the letter________ a. was written b. had been written c. had written d. has been written 15. She ________ English at RMIT these days. a. studies b. is studying c. will study d. is gong to study 16. She's at her best when she________ big decisions. a. is making b. makes c. had made d. will make 17. We________ next vacation in London. a. spend b. are spending c. will spend d. are going to spend 18. Robert________ tomorrow morning on the 10:30 train. a. arrived b. is arriving c. has arrived d. would arrive 19. Look! The bus________ a. left b. has left c. leaves d. is leaving 20. Mike________ one hour ago. a. phoned b. was phoning c. had phoned d. has phoned giúp mk vs. Mk cần gấp