My MP4 player isn't in my bag. Where ________ I have put it?

A. can             B. must             C. should          D. would

 Children under 12 years of age in that country ________ be under adult supervision when in a public library.

A. must            B. may              C. can             D. need

 He paid for a seat, when he ______ have entered free.

 A. could          B. would            C. must             D. need

 Lisa hasn’t  lived here for long. She ____ know many people.

A. needn’t        B. can’t           C. shouldn’t       D. didn’t

 –Who is the girl standing over there?

--Well, if you ____ know, her name is Mabel.

A. may             B. can              C. must             D. shall

 The world's economic development is not a win-lose game but one in which all ________ be winners.

A. can             B. shall           C. must           D. would

 I really ________ thank you enough. It’s been an wonderful day.

A. needn’t          B. should          C. must              D. cannot

 According to the newly-made traffic regulation，whoever drives through red light be fined at least 200 dollars．

A．shall             B．may             C．would             D．should

 Itbe a good movie—its reviews were very good．

A．can               B．should          C．might             D．need

 He was having a meeting；otherwise he  over to help us．

A．would have come   B．had come

C．should come       D．came