My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
A．couldn't have attended B．needn't have attended
C．mustn't have attended D．shouldn't have attended
Mr.Bush is on time for everything.How ________ it be that he was late for the opening ceremony.
A．can B．should C．may D．must
—Are you coming to Jeff's party?
—I'm not sure.I ________ go to the concert instead.
A．must B．would C．should D．might
—Could I borrow your dictionary?
—Yes，of course you ________.
A．could B．will C．can D．might
—Must I go there right now?
—No，you ________.You ________ go there before supper.
A．mustn't；need B．needn't；may
C．can't；need D．won't；can
I was really anxious about you.You ________ home without a word.
A．mustn't leave B．shouldn't have left
C．couldn't have left D．needn't leave
