Several weeks had gone byI realized the painting was missing.A. asB. beforeC. sinceD.

发布时间：2020-08-15 01:03:52


Several weeks had gone by    I realized the painting was missing.
A. as
B. before
C. since
D. when

网友回答

A. as
(答案→)B. before
C. since
D. when
解析：本题考查连词的用法。时间had passed(gone)by before S + did…在不知不觉中过……（已过去了）。
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