题目内容：

选择方框中的动词词组，并用其适当形式填空。

1. _____________ your health because you are not strong .

2.We are _______________ seeing each other soon.

3.Don ’ t forget __________ the lights when you go out.

4.They should _________￥25 ________ the cartoon book.

5.We must ____________ to help those poor students.