—I have to get to the post office by six o’clock, but it is almost six now．
—This clock is fifteen minutes fast．
| A．That’s too bad | B．Sounds good | C．Sure, you can | D．Take it easy |
See who’s there! ____ it be Mary?
| A．May | B．Must | C．Can | D．Will |
“Can I take it away?” “You ___ better not.”
| A．should | B．could | C．would | D．had |
“Let’s go to the library, shall we?” “____”
| A．NO, I can't | B．Yes, I will | C．Yes, thank you | D．NO, we’d better not |
“Do you have to leave now? ” “I’m sorry, but I really ____.”
A. can’t B,have C.should D.must
He ___ be in the garden.He must be in the room.
‘
| A．can't | B．mustn’t | C．will not | D．may not |