A = 3x^3 y + 6x^2y^2 + 3xy^3 tại x=1/2 y=-1/3

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37 I suggest (use)…………………………………………………… public buses. 38. You always (complain) ………………………………………… about my cooking. 39. Nobody would listen to the stories (tell)……………………………... by him so many times. 40. Don’t worry! She (be) …………………………………………..in a few minutes. 41. She (sleep)…………………………………….. for hours ! You must wake her up. 42. Tom (wash)…………………………… his hands. He has just repaired the T.V set. 43. Don’t forget to bring my dictionary when you (come)………………………... back tomorrow. 44. We would rather (stay)………………………………….. at home than go out on rainy days. 45. I’m sorry. I (not finish) ……………………………………….this work yet. 46. I (invite)…………………………………….. to her party last weekend. 47. I’d rather we (have)………………………………………… more time together. 48. Is Lan used to (write)………………………………………………………. to Maryam? 49. It took Mary two hours (travel) …………………………………..to the countryside last week. 50. His greatest ambition is (choose)……… (take part) ………..….in the Olympics London 2012. 51. None of the people (invite)……………………………………………..to the party can come. 52. I really don’t know why she (not/enter)…………………the last contest. She (win)…………….the first prize easily. 53. She (leave)………..school last year. Since then she (work) .................... as a waitress at a local pub. 54. They felt tired and hungry, so they (sit) ............ down under a tree and (rest) .............. for lunch. 55. Let’s (get) ............................. the house (clear) ............................... up before he arrives. 56. Last year we (install) ......................... ordinary light bulbs in our house, but now we (use) ....................... energy-saving ones. 57. A: In your places, I (a. go) .......................................... by air. B: If I (b. have) ..................................enough money, I (c. take) ............................... your advice.

Question 21-31: Choose the correct answer. Only one answer is correct: 21. After the clothes……………we can wear them to Ann’s birthday party. a. washing b. wash c. to wash d. are washed 22. A new university without a library……………in USA. a. recently b. opened recently c. recently has opened d. has recently opened 23. Do you know the place…………………..I can have a meal with my friends? a. where b. which c. what d. when 24. On Christmas Eve, people often………..a tree. a. are decorated b. were decorated c. decorating d. decorate 25. …………to your place tomorrow. Hope to meet you there. a. would come b. will come c. am coming d. was coming 26. The can overturned and everyone………………..into the deep river a. fall b. fell c. felt d. feel 27 The games were………………..important that they stopped fighting for a time. a. so b. too c. very d. such 28. This is an emergency. Please ……………………an ambulance to Cua Viet beach a. to sending b. sending c. to send d. send 29. Of the all members in my family, my grandpa is………………….. a. oldest b. the oldest c. most old d. the most old 30. How long……………..here? - Since 1980. a. do you live b. did you live c. have you live d. have you lived 31. We are having a plan to help them by ……………..them do things. a. encouraged b. encourage c. to encourage d. encouraging Question 32-41: Put the verbs in brackets into the correct from: 32. Most of the Earth’s surface (cover)…………..…………..by water. 33. The first festival (hold)………………….….nearly eight hundred years ago. 34. There’s some behind us. I think we (follow)……………………….. 35. My mother (not visit)……………………….us since he (move)…………..……..to the new town. 36. This bike (use)……………………….for more than six years. 37. Nowadays, many historical places (destroy)………….………….seriously. 38. It (get)……………………hotter and hotter in June 39. Last moth when we (visit)………….him, he (do)…………………..…an experiment on the upstairs 40. Tet holiday in Viet Nam (celebrate) ………………………around January and February 41. The Eiffel Tower is in Paris. It (visit)………………………..by millions of people every year.