It’s . I think it’s very easy.
| A．difficult something | B．something difficult | C．anything difficult | D．nothing difficult |
【2014年云南省中考】We_____ use mobile phones when the plane takes off
| A．may not | B．shouldn’t |
| C．needn’t | D．mustn’t |
【2014年山东省威海市中考】—Bob, where is Linda?
—She be in the library, but I am not sure.
| A．must | B．may | C．need | D．has to |
【2012 呼和浩特】—______ I try on those shoes in the window?
—______. They are just on show.
| A．Could; Yes, you can |
| B．Can; Sorry, you couldn’t |
| C．Could; Sorry, you can’t |
| D．Can; Yes, you could |
【2012辽宁大连】In Britain, you ____ be 18 if you want to drive a car.
| A．can | B．must | C．may | D．might |
【2012江西】Last year I ______ drive. I used to take the bus.
| A．could | B．couldn’t |
| C．should | D．shouldn’t |