1.All of us were _____ at the ____ news.

A. frustrating, frustrating  B. frustrating, frustrated 

C. frustrated , frustrating D. frustrated , frustrated

2. You will not succeed ______ you work harder.

 A. if  B. when  C. unless  D. because.

3. The dictionary mustn’t ________ from the library.

 A. take away  B. taken away  C. are taken away  D. be taken away

4. We all _____ the athlete of our country.

 A. take pride   B. are proud  C. take pride in D. is proud of

5. I really enjoyed your lecture , ______ there were some parts I didn’t quite understand.

 A. because   B. unless  C. though  D. after