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nguyenbichhanh0703
2 năm trước
Một loài vi khuẩn cứ 30 phút phân chia một lần trong điều kiện thích hợp và sau 3 giờ người ta đếm được 32000 tế bào. Số tế bào ban đầu là bao nhiêu?
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IV. GRAMMAR a. Give the right tenses of each verb in Conditionals 31. If you had told me earlier, I (give)……………….it to you. 32. If you (not stop)…………….smoking, you health would be affected. 33. She was not at home. If she (be)…………….at home, she (answer)……………the phone. 34. We would have enjoyed the party better if it (not be)……………so long. 35. If he had been told the whole story, he (not be)……………so angry. 36. I would send you a postcard if I (have)…………….your address. 37. You were late last night. If you (arrive)………….ten minutes earlier, you (get)……………a better seat. 38. If I (know)…………….you were ill last week, I (go)………………to see you. 39. We would not have got lost if we (have)..............................a city map. 40. If she (leave)..............................early yesterday, she (get)...........................the destination now. b. Rewrite the sentences with If-clause 41. We got lost because we didn’t have a city map. → ………………………………………………………………………………… 42. His friends were so late, so they missed the train. →……………………………………………………………………………………. 43. We didn’t go on holiday because we didn’t have enough money. → ……………………………………………………………………… 44. He studied very hard, so he passed the exam. → ……………………………………………………………………………..... 45. John missed the ferry because his car broke down. → …………………………………………………………........................... 46. We didn’t listen carefully; perhaps that’s why we made this mistake. → ……………………………………………………………............................. 47. We didn’t go out for a walk because it rained heavily. → …………………………………………………………............................. 48. We got a lift, so we reached the station on time. → ………………………………………………………............................ 49. She didn’t hurry, so she missed the last train. → ……………………………………………………………............................ 50. I wasn’t hungry, so I didn’t eat anything. → ………………………………………………………………..........................

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