—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
My uncle’s house in the downtown area is much smaller than ours, but it is ______________ expensive.
A. as much twice as B. twice as much as C. much as twice as D. twice much as
Having said goodbye to their friends, they _______ for home.
A. set about B. set up C set down D. set off
—Did the winner of the English Contest behave well?
—Really. She made a deep ________ on the judges.
A．idea B．feeling C．impression D．sense
It had been half an hour before she found herself _____ in the wrong direction of
her home.
A. walking B. to walk C. walked D. walk
His ability is beyond question; ______ has been in doubt is ______ he is prepared to work hard.
A. what; that B. what; whether C. which; whether D. that; that
