Một quả bưởi có khối lượng 1,5 kg rơi từ trên cây cách mặt đất 4m .tính công của trọng lực

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V. Complete the sentences with the to-infinitive or -ing form of the verbs in brackets. 1. I have enjoyed ___________ (meet) you. Hope ___________ (see) you again soon. 2. My father is not keen on coffee. He prefers ___________ (drink) tea. 3. I am a little busy. Would you mind ___________ (wait) a little longer? 4. Mobile games are great, but I don’t like ___________ (play) them for too long. 5. If I can choose, I prefer ___________ (stay) at home to ___________ (play) sport. 6. Tonight I’d like ___________ (go) out, but I have to do my homework. 7. Sue loves ___________ (make) origami. She can fold some animals, birds and flowers. 8. I detested ___________ (spend) two hours every day travelling to work and back. 9. He started ___________ (surf) the net hours ago. Has he stopped ___________ (surf) yet? 10. I tried hard ___________ (concentrate), but my mind kept ___________ (wander). VI. Write the correct form or tense of the verbs in brackets. 1. At present, the social networks ______________ (become) more popular among young generation. 2. I ______________ (not listen) to their new CD yet. Is it any good? 3. When I was a student, I ______________ (not like) doing homework. 4. Facebook ______________ (found) in 2004 by Mark Zuckerberg and Eduardo Saverin. 5. The American ______________ (spend) 34 hours a week watching television. 6. ______________ (you/ ever/ make) origami cranes? 7. I’ve just bought a new CD of folk songs. I ______________ (listen) to it tonight. 8. Do you adore ______________ (lie) in a hot bath? 9. Please try ______________ (arrive) punctually at 8.30. 10. Many teenagers prefer ______________ (watch) TV to ______________ (read) books. VII. Supply the correct form of the words in brackets. 1. The Internet is very ______________, it takes up a lot of our time. (addict) 2. I enjoy ______________ with friends and going out at the weekend. (social) 3. Sitting in front of the computer too long can cause ______________. (obese) 4. Are you ______________ about the new Gears Of War games? (excite) 5. She listens to classical music for ______________. (relax) 6. The Internet has changed the English language ______________. (consider) 7. She was ______________ with her job and decided to look for a new one. (satisfy) 8. Face to face ______________ is better than Skype video calls. (communicate) các bn giúp mik vs,mik cần gấp