单选题：_____ regular exercise is very important, it's never a good..

题目内容：

_____ regular exercise is very important, it's never a good idea to exercise too close to bedtime.
A. It
B. As
C. Although
D. Unless

参考答案：

_____ the activities might seem childish, in reality they re..

_____ the activities might seem childish, in reality they require a lot of strength and determination.A. WhenB. As C. While D. Once

分类：从属连词题型：单选题

The place was flooded _____ it had been raining for several weeks.A. because B. because of C. ever sinceD. as a result of

分类：从属连词题型：单选题

Everything began to shake. It seemed _____the world was at an end.A. even if B. as if C. ifD. although

分类：从属连词题型：单选题

— What was the party like? — Wonderful! It's been years _____ I enjoyed myself so much.A. after B. before C. when D. since

分类：从属连词题型：单选题

Never believe anything _____ any other person has believed it. Use your own head.A. that B. whenC. becauseD. once

分类：从属连词题型：单选题