27. Now and then they would our house and have a talk with us.A. call onB. drop in atC. d

发布时间：2020-08-16 07:06:24


27. Now and then they would       our house and have a talk with us.
A. call on
B. drop in at
C. drop in on
D. drop in

网友回答

A. call on
(答案→)B. drop in at
C. drop in on
D. drop in
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