The past 30 years has the great changes that have taken place in China.A. seenB. noticedC

发布时间：2020-08-17 01:59:10

The past 30 years has      the great changes that have taken place in China.
A. seen
B. noticed
C. watched
D. looked

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(答案→)A. seen
B. noticed
C. watched
D. looked
解析：考查动词：A. seen 看见，见证B. noticed注意到C. watched观察D. looked看，句意：过去30年已经见证的中国的巨大变化。选A。
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