1. We do all of our homework. We can't play.

A. Unless we do all of our homework, we can play.

B. If we do all of our homework, we can play.

C. Because we do all of our homework, we can't play.

D. We can't play, yet we do all of our homework. 

2. It isn't necessary for you to finish the work by Saturday. 

A. You mustn't finish the work by Saturday. 

B. You needn't finish the work by Saturday.

C. It is imporant for you to finish the work by Saturday. 

D. It is compulsory that you finish the work by Saturday. 

3. Although he had a good salary, he was unhappy in his job.

A. Beause of his good salary, he was unhappy in his job.

B. He was not happy in his job because of getting a poor salary.

C. Despite the fact that he got much money, he was happy in his job.

D. He was unhappy in his job in spite of getting much money.

4. My band teacher taught me how to play three instruments. My teacher’s name is Ms. Godsey.

A. Ms. Godsey is my band teacher, so she taught me how to play three instruments.

B. My band teacher is Ms. Godsey who taught me how to play three instruments.

C. My band teacher , Ms. Godsey , taught me how to play three instruments.

D. Ms. Godsey is my band teacher because she taught me how to play three instruments.