1. 根据首字母提示完成短语，并为句子选择相应的图片。

A.    B.     C.     D.

1. （1） We are walking on the road. We should k__ t__ t__ r__.  ()
3. （2） If you are reading a book in the library, you must t__ q__.  ()
5. （3） When we are at a bus stop, we should t__ t__.  ()
7. （4） When you are at school, you should k__ y__ d__ c__.  ()