(2013·济南一中模拟)—Where ________ Mary have put the empty bottles?
—She ________ them away. They must be somewhere.
A．can; can't have thrown
B．must; needn't
C．must; must have thrown
D．can; mustn't have thrown
(2013·河北衡水中学模拟)Some young people these days just ________ go out of their homes to contact the real world.
A．mustn't B．won't
C．mightn't D．shouldn't
(2013·重庆一中模拟)—Who ________ be phoning us at this time of night?
—It might be your sister.
A．might B．can
C．dare D．must
(2013·西安市高三二模)—John looks a bit upset. Did you tell him the bad news?
—Yes, but I ________ him after his birthday party.
A．should have told B．must have told
C．shouldn't have told D．needn't have told
(2013·潍坊市高三二模)Sometimes smiles ________ be false, hiding other feelings like anger, fear or worry.
A．must B．should
C．can D．would
(2013·南昌三中模拟)—Do you think Jack will lend us a hand?
—He is the last one to help others. He ________ lend his hand, though.
A．can B．must
C．should D．might
