She is on a special ________ to lose ________ weight.
| A．food; her | B．food; / | C．diet; her | D．diet; / |
—Happy birthday!
—Thank you！It's the best present I ________ for.(2012·江苏)
| A．should have wished | B．must have wished |
| C．may have wished | D．could have wished |
If you don't want to go swimming，you ________ as well stay at home.Actually，it is up to you to decide.
| A．should | B．would | C．can | D．may |
I ________ thank you too much for all your help to my son while we were away from home.
| A．won't | B．can't | C．can | D．will |
It ________ be the postman at the door.It's only six o'clock.
| A．mustn't | B．can't | C．won't | D．needn't |
—________it be Tom that stole the manager's mobile phone?
—No.As far as I know, Tom is very honest.
| A．May | B．Can | C．Must | D．Should |