( )6. A. I’m sure you will.           B. It’s frustrating.                C. Is it true?

( )7. A. By four o’clock.                     B. By car or on foot.             C. By working with friends.

( )8. A. It’s hard to say.

B. You’d better ask the teacher for help.

C. I’m sorry. I only know a little English.

( )9. A. Of course we can.           B. That sounds good.            C. I’m not sure.

( )10. A. Thank you.                   B. The same to you.             C. I’m happy to know that.