1.My classroom is on the   (three)floor, next to the library.

2.Look! The clouds are moving quite  (quick)in the sky.

3.A clock is used for   (tell)people the time.

4.The police caught two  (thief)in the supermarket yesterday morning.

5. This bus   (drive)knows most of the places in Shanghai.

6. Would you like to be a  (wait)inthe future?