1 . You know who I’m ____________ (refer) to. (所给词的适当形式填空)

2 . Look! The children ________(swim) in the pool.(所给词的适当形式填空)

3 . As we grow older, our eyesight is ________(fail). （所给词的适当形式填空）

4 . When ________ (cross) the road, the children are required to stop to look around and walk hand in hand. (所给词的适当形式填空)

5 . She is still ________ (hunt) for a new job. （所给词的适当形式填空）

6 . A large number of students ____(play) on the playground now. （用单词适当形式填空）