改错。
【小题1】Listentothe teacher careful.  
A    B C D     （______）____________
【小题2】Would you show methose pair of short pants?   
A   B C D （______）____________
【小题3】Don’teatsinclass.
A    B  C  D （______）____________
【小题4】Mumiswash the clothes.
A   B  C D （______）____________
【小题5】Are he lookingatthe sun?
A B    C D （______）____________

_____ you happy?（　　）

A．Is

B．Are

C．Am

There _________ a bank beside my home. ( )

A．is

B．are

C．be

D．can

I __________ a student. (    )

A．am

B．is

C．are

Thirty years ago, there ________ no underground stations in Shenzhen. (    )

A．were

B．is

C．was