31．Children above 12 are able to take part in skiing or other activitiesfor them.A. having

发布时间：2020-08-15 02:52:34


31．Children above 12 are able to take part in skiing or other activities    for them.
A. having designed
B. designing
C. to design
D. Designed

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A. having designed
B. designing
C. to design
(答案→)D. Designed
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