问题
选择题
— Mary's score on the test is the highest in her class.
— Really? She ______ have studied very hard.
[ ]
A. may
B. ought to
C. must
D. should
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— Mary's score on the test is the highest in her class.
— Really? She ______ have studied very hard.
[ ]
A. may
B. ought to
C. must
D. should
答案：C