Collecting stamps as a hobby increasingly popular during the past fifty years.A．becomesB．becameC．has become D．had become 题目和参考答案——青夏教育精英家教网—

题目内容

Collecting stamps as a hobby___________ increasingly popular during the past fifty years.

A．becomes

B．became

C．has become

D．had become

主语collecting stamps as a hobby被看成是整体，谓语动词用第三人称单数形式。而时间状语during the part fifty years限制了句子用完成时态。
【标签】动名词作主语

练习册系列答案

时刻准备着寒假作业系列答案

时习之期末加寒假系列答案

寒假作业假期园地中原农民出版社系列答案

A．has been polluted	B．were polluted
C．is polluted	D．was polluted

Twenty years _____ passed since I came to this school, but I feel twenty years _____a short time in my life.

A．has; are	B．have; is
C．has; is	D．have; are

As I have a meeting at four, ten minutes _____ all that I can spare to talk with you.

A poet and artist ________ coming to speak to us about Chinese literature and painting tomorrow afternoon.（2006年江苏高考）

The secretary and principal ________ at the meeting now.

A．are speaking	B．is speaking
C．were making a speech	D．have a speech

The number of foreign students attending Chinese universities ________ rising steadily since1990.

（天津市河东区201 4年高三二模考试）1 1. - Why didn't you come to Mike's birthday party yesterday?
- Well. I _______. but I forgot it.

Now Tom with his classmates ________ football on the playground.

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