(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

(2012·重庆高考)—________ you interrupt now? Can't you see I'm on the phone?

—Sorry Sir, but it's urgent.

A．Can                            B．Should

C．Must                           D．Would

(2012·陕西高考)I ________ thank you too much for all your help to my son while we were away from home.

A．won't                          B．can't

C．can                            D．will

(2013·天津高考)No one ________ be more generous; he has a heart of gold.

A．could                          B．must

C．dare                           D．need

(2009·江苏高考)He did not regret saying what he did but felt that he________it differently.

A．could express                 B．would express

C．could have expressed           D．must have expressed

(2011·江苏高考)—I left my handbag on the train, but luckily someone gave it to a railway official.

—How unbelievable to get it back! I mean, someone ________it.

A．will have stolen               B．might have stolen

C．should have stolen              D．must have stolen

(2011·全国卷Ⅰ)They ________have arrived at lunchtime but their flight was delayed.

A．will                           B．can

C．must                          D．should

(2012·江苏高考)—Happy birthday!

—Thank you! It's the best present I________ for.

A．should have wished              B．must have wished

C．may have wished                D．could have wished

(2012·江西高考)We ________ have bought so much food now that Suzie won't be with us for dinner.

A．may not                        B．needn't

C．can't                           D．mustn't