问题补充:
You should study harder it is too late to catch up.
A. if
B. when
C. after
D. before
答案:
A. if
B. when
C. after
(答案→)D. before
解析:if是否,如果;when当……时;after在……之后;before在……之前,以免。句意:你应该努力学习,不然太晚了,就来不及了。故选D。
如果觉得《You should study harder it is too late to catch up.A. ifB. whenC. afterD. before》对你有帮助,请点赞、收藏,并留下你的观点哦!