I would appreciate it you call back this afternoon for the doctor's appointment.A. untilB

发布时间：2020-08-17 08:34:27

I would appreciate it      you call back this afternoon for the doctor's appointment.
A. until
B. if
C. when
D. that

网友回答

A. until
(答案→)B. if
C. when
D. that
解析：if引导条件状语从句。
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