—Whoitbethatisknockingatthedoo

—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
A. can; must B. can; may
. must; can D. may; must

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My documents are always ______ out according to the contents(内容) and dates so that I have no trouble in finding them when they _______.

A．set; are needed

B．put; need

C．sorted; are needed

D．written; need

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The manager of the sales department is kept busy all day. After he has solved one problem, another is sure to _______.

A．raise

B．rise

C．arise

D．be appeared

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----- Have you ever visited the 2010 Shanghai World Expo?
-----Yes．When I was in China , I ______ it twice．

A．have visited

B．visited

C．had visited

D．would visit

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The old lady ______ the shopkeeper of charging her too much for the goods she had bought.

A．accused　　

B．charged　　

C．blamed　　

D．criticized

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I can’t imagine how he finished the relay race, ______ his foot wounded so seriously.

A．as

B．when

C．because

D．with

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