In America, if friend has invited you to drop in at any time, it is best to callbefore v

发布时间：2020-08-16 11:17:55


In America, if      friend has invited you to drop in at any time, it is      best to call
before visiting to make sure it is convenient for him.
A. a; a
B. the; a
C. a; 不填
D. the; 不填

网友回答

A. a; a
B. the; a
(答案→)C. a; 不填
D. the; 不填
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