用适当的词填空。

1. There are about two _______________ (百) students playing on the playground.

2. The mother is _______________ (自豪的) of her son,

    because he is very successful in his work.

3. There are many kinds of English _______________ (字典) in this bookstore.

    You can choose the one you like.

4. Look at the photo _______________ (仔细地), and you will find our teacher.

5. Would you mind _______________ (打开) the window? We need some fresh air.