China ______send people into space before, but now we can.

A．can't             B．couldn't                 C．may not

--Amy put her books away just now ______ she?

--Yes. I saw her do it.

A．doesn't                  B．wasn't             C．didn't

Dashan______ Chinese since he came to China. He speaks good Chinese now.

A．learned                   B．has learned                C．learns

--So hot in the classroom. Would you mind ______ the windows?

--OK. I'll do it right now.

A．to close                 B．to open                   C．opening

Barack Obama is the U. S. president______ speeches are really exciting.

A．whose                   B．who                     C．his

--Have you heard of the movie 2012?

--Yes. It ____in Hongse Theatre last winter.

A．shows           B．was shown              C．is shown

The more______ people drive, the______ traffic accidents there will be.

A．careful; less              B．carefully; fewer             C．careful; fewer

--More and more people think______ necessary to let the students teach themselves.

--That's true. They can improve themselves in this way.

A．it has               B．it              C．that

--Sally, What's wrong with your computer?

--I don't know______. Maybe I need to get someone to check it.

A．what's wrong            B．what was wrong             C．what wrong is

--Thank you so much for the present you sent me.

--______.

A．Please don't say so

B．It's not so good, I think

C．I'm glad you like it