1. By the age of 12, Jim was able to speak English fluently

2. She had gained a lot of experience before she applied for that job

3. We were in great troubles because we had spent all the money

4. My father knows well about London because he has been there many times

5. My friend had studied Japanese before she moved to Japan

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Bài 10:

1. After the storm had passed, people came back to their normal life.

2. A decent meal was prepared by my mother after she had come home after work.

3. By 1990, my family had settled down in New Jersey for 10 years.

4. Jim was having a shower when the doorbell was rung by his wife.

5. At this time last year, a project on environmental issues was being carried by Dr.Brown.

6. They had prepared carefully for the hurricane before it arrived.

7. Many people had lived in temporary shelters until the storm passed.

8. Earthquakes in Japan have caused devastating effects on human and the environment recently