1. An exhibition of paintings ____ at the museum next week.

A. are to be held B. is to be held C. are holding D. will hold

2. I'm sorry, sir. Your recorder isn't ready yet. It _____ in the factory.

A. is being repaired B. is repaired C. has been repaired D. hasn't repaired

3. Every possible means , but none prove successful.

A. has tried B. has been tried C. is being tried D. tried

4. _______ that they can pass the written exam this time.

A. That is hoped B. It is hoped C. That hopes D. It hopes