I. Rewrite the sentences so that they have the same meaning as the original ones.

1. What is the distance between your house and your school?

=> How far is it from your house to your school? 

2. I often walked to school when I was a student.

=> I used to walk to school when I was a student.

Giải thích: Used to Vinf - Từng thích làm việc gì đó nhưng giờ không thích làm nữa.

3. They will use solar energy to protect the environment.

=> Solar energy will be used to protect the environment.

*Giải thích: Cấu trúc câu bị động - thì Tương Lai đơn:

(+) Khẳng định: S + will + be + PII + (BY  O)

=> Khi by + O là by us, by them, by people, by someone, by somebody, by buiders, by we.....thì ta bỏ đi không sử dụng trong câu bị động.  

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