---I have been waiting here for . But where is Tom?
---He is on his way back now.
A. sometime
B. some time
C. sometimes
D. some times
网友回答
A. sometime
(答案→)B. some time
C. sometimes
D. some times
解析:A. sometime 某个时间,多指将来的某个时间 B. some time一段时间 C. sometimes 有时 D. some times很多次;句意:我已经在在这儿等了一段时间了,但是汤姆在哪里呢?他在正在回家的路上。故选B