问题补充:
Why haven you finished your homework yet? You to have finished it by last Sunday.
A. are supposed
B. were supposed
C. are supposing
D. were supposing
答案:
A. are supposed
(答案→)B. were supposed
C. are supposing
D. were supposing
解析:本题考查的是be supposed to的用法。题意为“你为什么还没完成作业?你上个周日就应该完成了。”在本题中be supposed to have finished相当于should have finished,意为“本来应该完成而实际上没有”。