根据对话内容，从方框中选择适当的句子，完成对话。

N=Nick　J=Joe

N：There is a lake in the park．Let’s go and play there．

J：　　1　　

N：Can we play football?

J：　　2　　

N：　　3　　

J：Look at the sign．

N：Oh, yes．There are a lot of signs there．

J：Look!We can’t ride our bikes near the lake．We can’t feed the fish．

N：　　4　　

J：I have a camera．We can take some photos．

N：　　5　　

根据句意用所给单词的适当形式填空。

The water in the river is ________(harm)．You can drink it without cooking．

用所给单词的适当形式填空。

The boy often ________(study)with his father in the library．

用所给单词的适当形式填空。

Let’s help ________(they)do the homework．

用所给单词的适当形式填空。

My sister likes ________(walk)in the street．

用所给单词的适当形式填空。

Look at the sign．________(not play)football here．

用所给单词的适当形式填空。

We can’t ________(take)the CDs home．

用所给单词的适当形式填空。

Let’s do some ________(shop), OK?

用所给单词的适当形式填空。

This book is not his．It’s ________(she)．

用所给单词的适当形式填空。

That’s not my ________(father)bike．