Washington ______ get very hot and sticky in summertime. July and August are usually the warmest months.

He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.

— Who’s that man over there standing in the garden? Is it Mr. White?—It __________ be him. He has gone to Shanghai on business. 

This pair of shoes ______ Li Gang’s ,It’s too big for him .

(2012·四川)—Goodbye，John.Come back again sometime.—Sure，________.