—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 teacher will never have Tom away with in the exam.
A. get; cheat B. to get; cheating
C. getting; cheating D. getting; to cheat
The two sisters are ________ different in character --- one talks a lot while the other is a girl of few words.
A. exactly B. entirely
C. frequently D. finally
He has been in bed ______ he fell off his bike a week ago.
A. even if B. soon after
C. now that D. ever since
The letter he had been looking forward to________at last this morning.
A．come B．comes C．coming D．came
______ is reported in the newspapers, talks between the two countries are making progress. （北京2004.34）
A. It B. As C. That D. What
