一、选择题

1、 The boy must have had a cold. Look, _____!

A. what he coughs       B. what does he cough  

C. how he coughs        D. how does he cough

2、It’s a long time ago ______ I saw you last time.

A. when     B. since    C. for     D. that

3、It’s time          . 

A. to go to home   B. to go home  C. going to home  D. going home