用所给词的正确形式填空！
1.Look!That man (wave)to you.Do you know him?
2.Rhe children were playing in the garden. They (must,finish) their homework.
3.You must (live) here for long time.
4.Please show me your (drive) licence.
5.We have no time,You (have) better hurry up.
6.The teacher wants you (go)to her office at once.
参考答案:is waving
must finished
have been
driving
had
to go