1 . 无论做什么，请三思而后行。(完成译句)
________ ________what you do, please think twice before you do it.

2 . Lisa wrote the letter to say goodbye to her junior teacher. (对划线部分提问)
________ ________Lisa write the letter?

3 . All of us worked really hard to go to a better senior high. (改为同义句)
All of us worked really hard_________ _________we could go to a better senior high.

4 . There are about 1.4 billion people in China now. (对划线部分提问)
________ the________ of China?

5 . Here comes a message for you _______you might expect.

A．which

B．whose

C．when

D．what