We spend about one-third of our lives sleeping. We know relatively little about sleep.

A. If Mike graduated with a good degree, he would join the ranks of the unemployed.

B. That Mike graduated with a good degree helped him join the ranks of the unemployed.

C. Mike joined the ranks of the unemployed because he graduated with a good degree.

D. Although Mike graduated with a good degree, he joined the ranks of the unemployed.

A. Although she didn’t try hard to pass the driving test, she could pass it.

B. She tried very hard, so she passed the driving test satisfactorily.

C. No matter how hard she tried, she could hardly pass the driving test.

D. Despite being able to pass the driving test, she didn’t pass it.

A. The weather was too dismal that the picnic was cancelled immediately.

B. The picnic would be cancelled immediately since the weather was dismal.

C. So dismal was the weather that they had to cancel the picnic immediately.

D. The weather was enough dismal for them to cancel the picnic immediately.

A. Neither the chickens nor the pigs haven’t been fed.

B. Neither the chickens nor the pigs have been fed.

C. Either the chickens or the pigs have been fed.

D. Not only the chickens but also the pigs have been fed.

A. Although Nam defeated the former champion in three sets, he did not win the title of inter- school table tennis championship.

B. Being defeated the former champion in three sets, Nam lost the chance to play the final games of inter-school table tennis championship.

C. Having defeated the former champion in three sets, Nam did not hold the title of champion.

D. Having defeated the former champion in three sets, Nam won the inter-school table tennis championship.

A. His car was stolen yesterday, he is a professor.

B. Mr.Smith, who his car was stolen yesterday, is a professor.

C. Mr.Smith, who is a professor, his car was stolen yesterday.

D. Mr.Smith, whose car was stolen yesterday, is a professor.