连线。
1. astronaut 在火星上
2. in a spaceship    昨晚
3. in space 在太空飞船里
4. on Mars 游泳池
5. swimming pool  在太空
6. last night 宇航员

—Where does a cow live? (   )
—A cow lives ______ a farm.

A．at

B．in

C．on

----When do you sleep _____ class? (   )
----Never .

A．at

B．on

C．in

选择正确的单词填空。
【小题1】--________(What/How) do you want to________(be/being)?
--I want to be a________(teach/teacher).I want to________(teach/teacher) English.
【小题2】--________(Do/Does)  Betty________(go/goes) to school by car?
-No, She doesn't________(go/goes)to school by car.
【小题3】--________(Whose/Who) comes to school on________(foot/feet)?
--Miss Lu does.
【小题4】Ms Guo________(walk/walks) to the station and________(take/takes) the train.

I’ll help you ______ your lessons. (   )

A．in

B．with

C．to

D．at