. the office, the foreign visitors were shown round the teaching building.A. Having shown

发布时间：2020-08-16 12:27:01


.      the office, the foreign visitors were shown round the teaching building.
A. Having shown
B. Showing　
C. Has shown　
D. Having been shown

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A. Having shown
B. Showing　
C. Has shown　
(答案→)D. Having been shown
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