—When did it begin to snow?—It startedthe night.A. duringB. byC. fromD. at

问题补充：

—When did it begin to snow?

—It startedthe night.

A. during

B. by

C. from

D. at

答案：

(答案→)A. during

B. by

C. from

D. at

解析：

句意为：——什么时候开始下雪的？——在夜间开始的。“在……期间”应用during。