are you sure they will come back___?A.before long B.long before C.after some time D.after sometime

问题描述:

are you sure they will come back___?A.before long B.long before C.after some time D.after sometime
我觉得是C啊,可正确答案是A.,

A
固定搭配,before long 不久后
C some time 的意思是某一时间点,after some time 在某一时间点之后,不如A通顺