I'm sure he will be back __.just wait a minute.A.long before B.before long C.after long D.long after
问题描述：
I'm sure he will be back __.just wait a minute.
A.long before B.before long C.after long D.long after
答
选 B before long
答
B 不久
注：A 很久以前； C与D搭配错
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答
I'm sure he will be back （B.before long）.Just wait a minute.
我肯定他不久就会回来的.就再等一下吧.
before long,不久以后.