1. _____ all our kindness to help her, Sara refused to listen.

A. At

B. In

C. For

D. On

2. ____ before we depart the day after tomorrow, we should have a wonderful dinner party.

A. Had they arrived

B. Would they arrive

C. Were they arriving

D. Were they to arrive

3. ____ conflict among city-states caused the eventual decline of Greek civilization.

A. Continuous

B. Continual

C. Constant

D. Contrary

4. ____ he’s already heard the news.

A. Chances are

B. Chance is

C. Opportunities are

D. Opportunity is

5.____ his knowledge and academic background, he is basically stupid.

A. But for

B. According to

C. For all

D. Thanks to