用括號內所給單詞的適當形式填空。1．

問題詳情：

用括號內所給單詞的適當形式填空。

1．________ (this) boys are my good friends.

2．February 21st is Cindy's ________ (nine) birthday.

3． is ________ (we) history teacher.

4．Let's ________ (play) games in the classroom.

5．How much ________ (be) your trousers?

【回答】

e　h　　　

知識點：構詞法

題型：完成句子