7. Please tell me ____________ you are waiting for.

6. ____________ and ____________ they will meet has not been decided yet.

5. The fact ____________ she had not said anything at the meeting surprised everybody.

4. ____________ we need is more time.

3. I am very interested in ____________ he has improved his pronunciation in such a short time.

2. That’s ____________ he refused my invitation.

1. I can’t decide ____________ dictionary I should buy.

10. I wonder why she refused my invitation.

9. Do you remember the teacher who taught us English at middle school?

8. He spoke as if he understood what he was talking about.