There are over twenty visitors visiting the park.A. thousandB. thousandsC. thousand ofD.

发布时间：2020-08-21 02:36:20

There are over twenty      visitors visiting the park.
A. thousand
B. thousands
C. thousand of
D. thousands of

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(答案→)A. thousand
B. thousands
C. thousand of
D. thousands of
解析：twenty 后接thousand 不需要加S，故选A
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