Câu 1: Ở tế bào nhân thực, MSC có thể thay đổi "tính động" như thế nào trong các trường hợp sau? - Khi tế bào cần hấp thu một lượng nước lớn từ môi trường bên ngoài. Cho ví dụ? - Khi nhiệt độ bền ngoài giảm xuống gần tới điểm đóng băng của nước. Cho ví dụ? Gi úp mình với mọi người ơi

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giúp mik với!!! I.Put the verbs in brackets in the simple past tense. 1. Her father (die) _________________ in 1955 2. Tom (go) _________________ to the post office twice yesterday. 3. He (live) ___________________ in London from 1980 to 1985. 4. They (sell) __________________ their house several days ago. 5. When (you, see) _____________________ her ?-Last Monday. 6. ________he (come) _______________ to see you last night ?- Yes, he did. 7. I (not,meet) ___________________ her in the street last Sunday. 8. I (be) _______________________ at home last night. 9. I (study) _________________ music when I was at school. 10. The people in the café (not be) __________ friendly when I was there yesterday. II.Put the verbs in brackets in the simple past tense or in the present perfect tense 1. I (leave) ______________ my school bag at school this morning. 2. It (be) ___________________ a great film in 2001. 3. Our teacher (tell) ___________________ us to be quiet yesterday. 4. I went to the shop but I (not have) ______________ any money. 5. Susan (not know) _______________ about the exam and she did very badly. 6. I (buy) _________________ a ticket for the football match yesterday. 7.Mary and John are neighbors. They (know) _______________ each other for a long time. 8 .When I was a small boy, I used (live) _________________on a farm. 9. I (teach)_________________English in that school since 1997. 10.They _________________(do) nothing since they _________________(get) up. 11.My brother_________________(join) the army when he_________________(be) 18. 12.He___________(serve) in the army for 3 years and then ___________(go) to university. 13.How long have_________________(live) in this town? -I _________________(live) in this town for ten years. 14.My sister_________________(finished) school in 2019 and _________________(be) a student at the National University since then. 15.My parents_________________(go) out.They will be back soon.