10.Either they or Tom (have, has) asked the question.　

her he nor I (am, is, are) a teacher.　

9.Either he or you (are, is) right.　

8.The Greens (are, is) watching TV.　

7.No one except his sisters (know, knows) about it.　

6.Mr Green with his sons (are, is) having supper at home.　

5.Who (is, are) often late?　

4.Somebody (want, wants) to see you.　

3.We each (have, has) been to the Great Wall.　

2.Each of us (have, has) done the work.　

例：My trousers are too old , I want to buy a new pair.我的裤子太旧了，我想买条新的。　

Your glasses are new, aren’t they?你的眼镜是新的,不是吗?

这类名词前经常用a pair of, pairs of来修饰，此时其人称取决于pair的单复数。

例：A pair of gloves is welcome present.手套是比较受欢迎的礼品。

Here are some new pairs of shoes for you.这几双新鞋是给你的。

补　 充　 练　 习(单选题)

1.Twenty minutes (is, are) enough for me.