The students were told to their English before going abroad.A. give upB. polish upC. use

问题补充：

The students were told to their English before going abroad.

A. give up

B. polish up

C. use up

D. end up

答案：

A. give up

(答案→)B. polish up

C. use up

D. end up

解析：短语辨析。 A. 放弃 B. 润色提高 C. 用完；耗尽 D. 结束；死亡。句意：这些学生被告知在出国之前先提高英语水平。故选B。