It is known to all that ______ you exercise regularly, you won"t stay in good he

题型：北京模拟题难度：来源：

It is known to all that ______ you exercise regularly, you won"t stay in good health.     [     ]
A. unless
B. if
C. until
D. as

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举一反三

We were so excited that we rushed into the street _______ we heard the news. [ ]
A. until
B. ever since
C. as if
D. as soon as

题型：北京模拟题难度：| 查看答案

—Dad, I"m afraid that I can"t do it.
—Take it easy, dear. You"ll never know it____you try. [ ]A.after
B.since
C.when
D.until

题型：北京模拟题难度：| 查看答案

The players kept on training _____ it rained heavily. [ ]
A. since
B. though
C. because
D. for

题型：北京模拟题难度：| 查看答案

We will arrive at the cinema in ten minutes _____ there isn"t too much traffic in the street. [ ]
A. till
B. though
C. before
D. if

题型：北京模拟题难度：| 查看答案

— Is my answer to the math problem right?
— Let me consider it carefully _____ I give you an answer. [ ]
A. before
B. after
C. since
D. as soon as

题型：湖北省中考真题难度：| 查看答案