5.答案:B

解析:这是一个主语从句.it作形式主语,whether they will enjoy it作真正的主语.remain后接to do sth.作表语.see与主语从句是动宾关系,所以要用to be seen作remains的表语.

4.答案:B

解析:have a role to do sth.具有做某事的作用.

3.答案:A

解析:invite与you是动宾关系,要用过去分词.invited作状语,表示被动.

2.答案:D

解析:The president's attending the meeting himself是现在分词的复合结构,在句子中作主语.

1.答案:A

解析:在英语谚语中,常用单词的相同形式进行表达,made和kept都是过去分词,表示被动.

51.(NMET 1994, 32) The visiting Minister expressed his satisfaction with his talks, _______ that he had enjoyed his stay here.

A.having added B.to add

C.adding D.added

●答案解析

50.(NMET 1994, 22) Rather than _______ on a crowded bus, he always prefers _______ a bicycle.

A.ride; ride B.riding; ride

C.ride; to ride D.to ride; riding

49.(NMET 1994, 18) She set out soon after dark _______ home an hour later.

A.arriving B.to arrive

C.having arrived D.and arrived

48.(NMET 1995, 34) The boy wanted to ride his bicycle in the street, but his mother told him _______.

A.not to B.not to do

C.not to it D.do not to

47.(NMET 1995, 26)-You were brave enough to raise objections at the meeting.

-Well, now I regret _______ that.

A.to do B.to be doing

C.to have done D.having done