1. It took me about one hour to find the lost keys.
-> I spent 1 hour finding the lost keys 
2. They have repaired their house recently.
-> Their house has been repaired recently
3. Apples are cheaper than orange. 
-> Apples are not so expensive as orange 
4. Unless you work Harper, you won't pass the exam.
-> If you don't work harder, you won't pass the exam 
5."How many students are there in your class?"
-> The teacher asked me how many students there were in my class 

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Hãy rate 5*, cảm ơn và chọn CTLHN nếu thấy hữu ích nhé !!!

1.I spent one hour finding the lost keys

2.Their house has been repaired recently (by them)

3.Apples are not as expensive as oranges

4.If you don’t work hard, you won’t pass the exam

5.The teacher asked me how many students there were in my class