How long is it we last had a picnic together?A. untilB. beforeC. thatD. Since

发布时间：2020-08-16 07:18:24


How long is it      we last had a picnic together?
A. until
B. before
C. that
D. Since

网友回答

A. until
B. before
C. that
(答案→)D. Since
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