Ⅰ.用所给词的适当形式填空
1．Mr. White ______ just ________ (buy) a recorder for his son.
2．She ______ (be) here just now.
3．My mother isn’t in.She ________ (go) to the theatre.
4．________ you ________ (see) Mr.Smith recently?
5．My mother ________ (wake) me up when she ________ (hear) a knock at the door last night.
