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16.
The phone was ringing but ________ she got indoors, it had stopped.
(A) at the time
(B) for a time
(C) by the time
(D) within the time
The phone was ringing but ________ she got indoors, it had stopped.
(A) at the time
(B) for a time
(C) by the time
(D) within the time
参考答案
