(2010·辽宁高考)Doctors say that exercise is important for health, but it ________ be regular exercise.
A．can B．will
C．must D．may
(2012·辽宁高考)One of our rules is that every student ________ wear school uniform while at school.
A．might B．could
C．shall D．will
(2012·上海高考)The new law states that people ________ drive after drinking alcohol.
A．wouldn't B．needn't
C．won't D．mustn't
(2010·北京高考)—Good morning. I've got an appointment with Miss Smith in the Personnel Department.
—Ah, good morning. You ________ be Mrs. Peters.
A．might B．must
C．would D．can
(2011·江西高考)It ________be the postman at the door.It's only six o'clock.
A．mustn't B．can't
C．won't D．needn't
(2013·安徽高考)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
