根据句意，用所给单词的适当形式填空。

1. Tom is looking forward to _______ (see) the park.

2. Be careful when you go _______ (cross) the street.

3. Which bus              I               (take) to the post office?

4. Tom fell off the bike and _______ (hurt) his legs.

5. He wants to know if the _______ (follow) answer is right.

The number of the cranes is getting ________  . If we don't help them, they will disappear ________ 

a few years.    [ ]

A. fewer and fewer; in      

B. larger and larger; after

C. more and more; after    

D. smaller and smaller; in