He met many problems ______ he was going over his lessons.[ ]A. before B. as

题型：0115 模拟题难度：来源：

He met many problems ______ he was going over his lessons.[ ]
A. before
B. as soon as
C. since
D. while

答案

举一反三

______ it rained heavily, they arrived at Shanghai Grand Theatre in time. [ ]
A. But
B. Though
C. Because
D. If

题型：上海模拟题难度：| 查看答案

_______ you have been to America for many times, you must know something about this country. [ ]
A. Since
B. Although
C. Unless
D. When

题型：上海模拟题难度：| 查看答案

Miss Wang asked me ________ I was busy with the test those days. [ ]
A. that
B. if
C. when
D. what

题型：上海模拟题难度：| 查看答案

Make sure _____ he is at home or not before you call on him. [ ]
A. if
B. whether
C. what
D. how

题型：天津市期末题难度：| 查看答案

I liked flying a kite ______ I was a child. 　　 [ ]
A. before　　　　　
B. since　　　　
C. when　　　　　
D. until

题型：期末题难度：| 查看答案