Trees ________ the air clean. (    )

A．keeps

B．keep

C．kept

The children_____some cute pets. (    )

A．has

B．have

C．there are

I can ____ far. (   )

A．jump

B．jumps

C．Jumping

在横线部分填写适当的词汇或短语
【小题1】_______ is London?
【小题2】Toronto is a very famous _______.
【小题3】It’s a good place ____ hiking and fishing.
【小题4】You can ______ photos of them.
【小题5】Many children ______ going to Disneyland there.

用所给词的适当形式填空。 
1. I ________ ill today. (be)
2. I’ll ______ (help) you with your English.
3. Bob _______(have) a cough today.  
4. She ______(have) a fever yesterday.
5. Can you ______ (go)and fly a kite with me?
6. Sorry, I can’t ______(go) to park with you.