单项选择题

John's score on the test is the highest in the class; he ______ last night.

A. must study
B. should have studied
C. must have studied
D. is sure to study
<上一题 目录 下一题>
热门 试题

单项选择题
You should have put the milk into the icebox, I expect it ______ undrinkable.
A. became
B. had become
C. has become
D. becomes
单项选择题
Does brain power ______ as we get older Scientists now have some surprising answers.
A. descend
B. decline
C. deduce
D. collapse
相关试题