49.5
问题描述：
49.5
would you drop__me tomorrow evening and have a game of chess with me
a.in
b.on
c.in at
d.in on
答
d
drop in on顺道拜访
drop in v.顺便走访,不预先通知的拜访
drop on v.训斥,惩罚
drop in at没有这个词组