问题

Their answers are exactly the same — one of them ______ from the other.
A:must copy
B:must have copied
C:should copy
D:should have copied
B:must have copied
C:should copy
D:should have copied
正确答案是:
同类题型
cle went abroad in 2010, and ________since.
Success comes from hard work.— You are right. Lazy people will achieve __________.
Tara and her sister quiet and they sports.
In the end, it was Becky ________ he turned for a gentle word and a smile.[ ]
—I am still working on my project.——-Oh, you`ll miss the deadline. Time is .