— Why do you want the book so much?
— ____, sir.
| A．Studying | B．Studied | C．Studies | D．To study |
Mary _________be late, so don’t wait for her.
| A．would | B．can | C．should | D．may |
Don’t take the lift in a fire because the lift __________ become trapped between floors.
| A．must | B．may | C．would | D．should |
Frightened by the noise in the night, the little girl __________not sleep in her room.
| A．must | B．can | C．should | D．dare |
------These grapes look really beautiful.
------They _________! See the price, 3.99dollars a pound. Very expensive, aren’t they?
| A．would | B．should | C．might | D．could |
Do help yourself to some fruit, __________ you?
| A．don’t | B．wouldn’t | C．can’t | D．won’t |