根据提示用所给单词的适当形式填空．

1．My mother ________(clean) the house when I came back.

2．He ________(write) the letter to his pen pal since 9 o'clock.

3．How long ________ your uncle ________(be) in the city?

4．I really enjoy ________(play) tennis after school.

5．He said that he ________(return) the book in three weeks.

第二节  用所给单词的正确形式填空。

56.Would you mind not ____________(put) your bike here?

57.It’s very _____________(polite) to cut in line.

58.There are too many ____   _______ (mouse) in the old house.

59.He   ____  ______(give) me an apple last night.

60.He won the first prize. He is the _____   ______(win) of the match.

61.He takes an _____   ______(interested) in keeping pets.

62.Tom’s mother encourages him  _____  _______(take) part in the competition.

63.He _______________(sing) two songs for us yesterday.

64.How did the children try to make their parents ________________(buy) the dolls?

65.He has been ________________(write) the letter to his pen pal since 9 o’clock.