问题
选择题
—Guess what! I have got A for my term paper.
—Great! You ______ read widely and put a lot of work into it.
A．must
B．should
C．must have
D．should have
答案
C
既然已经通过考试，自然是以前阅读广泛﹑用心学习了，故在C﹑D中进一步选择，D项表示本应当，因不附题意而被舍去。