问题补充:
----May I go swimming this afternoon?
----Im afraid not you have finished your homework.
A. unless
B. because
C. if
D. though
答案:
(答案→)A. unless
B. because
C. if
D. though
解析:
试题分析: 句意:今天下午我可以去游泳吗?我恐怕不能,除非你已经完成了作业。unless除非,because因为,if 如果,though尽管。根据语境可知选A