单项填空。
1.__________many times,but he still couldn't understand it.
A.Having been old B.Though he had been told
C.He was told D.Having told
2.Tom's mother kept telling him that he should work harder,but__________didn't help.
A.he B.which C.she D.it
3.__________,so Mary was very sad.
A.Her mother was very ill B.Her mother being ill
C.Her mother's being ill D.Because her mother was ill
4.-Sugar__________milk.-Only milk,please,__________I used to like sugar.
A.and;and B.and;but C.or;and D.or;but
5.It must have rained last night,__________the road is wet.
A.while B.or C.for D.because
6.Hurry up,__________we'll miss the train.
A.and B.but C.for D.or
7.I wrote a letter,__________I forgot to mail it.
A.for B.but C.or D.while
8.Please__________come in or go out,don't stand there in the doorway.
A.neither B.and C.for D.either
9.Why was Edison not able to hatch chickens__________the hen could.
A.while B.when C.because D.unless
10.The teacher came in,__________the students stood up and said,"Good morning,teacher."
A.while B.and C.but D.for
参考答案及详解
1.C。该句为but引导的并列句。此题若去掉but,则A、B项皆正确。
2.D 3.A。该句为so引导的并列句。
4.B。根据答语“Only milk,please”可知对方是问“糖和牛奶你都要吗? ”。
5.C。从路是湿的来推测,昨晚一定下雨了。用because是错的,因为because从句是不能引起下雨的直接原因。
6.D 7.B 8.D。either...or...,要么……,要么……
9.A 10.B。and 连接两个分句,表示两个连接的动作。
