—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
A. can; must B. can; may
C. must; can D. may; must
The reason for his success is ______ he worked very hard.
A. that B. why C. whether D. How
－How do you like our restaurant? －I can’t find a ________one.
A. good B. better C. best D. Fine
The manager meant _______the workers that being 5 minutes late meant____ the company.
A. to tell, to leave B. telling, leaving
C. to tell, leaving D. telling, to leave
His illness ________ his absence.
A. leads for B. accounts for
C. provides for D. pays for
Look at the sign, Sir. We don’t permit ________ in the hall.
A. smoke B. to smoke
C. smoking D. to have a smoke
