—Is Nancy knocking at the door?
—No, it ________ be Nancy. She has gone to Guangzhou.
A. can’t B. mustn’t C. won’t
-- Look at the boy running on the ground. Is it David?
-- It _______ be him. I saw him go to the teacher’s office just now.
| A．might | B．could | C．can’t | D．mustn’t |
They’ve got two machines, but ________ works well.
| A．neither | B．either | C．all | D．both |
The teacher asked me to ____ the exercise books before we began to do our homework.
| A．put up | B．give out | C．hang out | D．fix up |
If I _______ you, I would say another student could do it better.
| A．was | B．were | C．were | D．are |
My father used to ______ me to concerts. But now, I have no time for concerts.
| A．take | B．bring | C．taking | D．bringing |