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

A. We know relatively little about sleep; as a result, we spend about one-third of our lives sleeping.

B. We shall know more about sleep if we spend more than one-third of our lives sleeping.

C. Despite spending about one-third of our lives sleeping, we know relatively little about sleep.

D. We spend about one-third of our lives sleeping so that we know relatively little about sleep.

Câu 1: He couldn’t retake the exam because he missed too many lessons.

A. He would retake the exam if he didn’t miss too many lessons.

B. He could have retaken the exam if he hadn’t missed too many lessons.

C. If he missed too many lessons, he wouldn’t retake the exam.

D. If he had missed too many lessons, he wouldn’t have retaken the exam.

Câu 2: We cut down many forests. The Earth becomes hot.

A. The more forests we cut down, the hotter the Earth becomes.

B. The more we cut down forests, the hotter the Earth becomes.

C. The more forests we cut down, the Earth becomes hotter.

D. The more we cut down forests, the Earth becomes hotter.

Câu 3: Lucy always reminds me of my youngest sister.

A. When ever I see Lucy, I think of my youngest sister.

B. I always thinks of Lucty, my youngest sister

C. It is Lucy who is my youngest sister

D. My youngest sister’s name is Lucy.

Câu 4: If he wrote to her, she would be happy.

A. When he wrote to her, she wasn't happy.

B. May be he'll write to her, and then she'll be happy.

C. He doesn't write to her, so she isn't happy.

D. She's happy because he has written to her.

Câu 5: Overeating is a cause of several deadly diseases. Physical inactivity is another cause of several deadly diseases.

A. Not only overeating but also physical inactivity may lead to several deadly diseases.

B. Apart from physical activities, eating too much also contributes to several deadly diseases.

C. Both overeating and physical inactivity result from several deadly diseases.

D. Overeating and physical inactivity are caused by several deadly diseases.

Câu 6: James did not come. He did not call either.

A. James did not come, so he did not call.

B. James did not come and he did not call, too.

C. James did not came but he called afterwards.

D. James neither came nor called.