(2013·高考安徽卷)It ________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
A.may B.couldn’t
C.should D.needn’t
(2013·高考四川卷)—Why are your eyes so red? You________have slept well last night.
—Yeah,I stayed up late writing a report.
A.can’t B.mustn’t
C.needn’t D.won’t
(2013·高考辽宁卷)Harry is feeling uncomfortable.He ________too much at the party last night.
A.could drink B.should drink
C.would have drunk D.must have drunk
(2013·高考浙江卷)I ________ myself more-it was a perfect day.
A.shouldn’t have enjoyed
B.needn’t have enjoyed
C.wouldn’t have enjoyed
D.couldn’t have enjoyed
(2013·高考重庆卷)—What are you doing this Saturday?
—I’m not sure,but I________go to the Rolling Stones concert.
A.must B.would
C.should D.might
(2013·高考天津卷)No one ________be more generous; he has a heart of gold.
A.could B.must
C.dare D.need