题目内容
The police still haven’t found the lost child, but they’re doing all they .
| A．can | B．may | C．must | D．should |
A
解析试题分析：考查情态动词。can表能力， may可能，可以， must必须，D. should应该， do all（that）one can意为：“竭尽全力”。句意为：“虽然警察仍未找到那个失踪的孩子，但他们正竭尽所能。”选A。
考点：考查情态动词
You _______ call him if you want to, but you _______, for he’ll surely come here soon.
| A．may; mustn’t | B．can; needn’t | C．have to; needn’t | D．can; doesn’t need |
Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
| A．shall | B．need | C．can | D．must |
The weather turned out to be fine. I the trouble to carry the umbrella with me.
| A．should have taken | B．needn’t have taken |
| C．mustn’t have taken | D．could have taken |
You ________ pay too much attention to your reading skill, as it is so important.
| A．can’t | B．should | C．must | D．needn’t |
As it turned out to be the most important meeting in the year, you ____ so casually.
| A．Shouldn’t dress up | B．shouldn’t have dressed up |
| C．needn't have dressed up | D．couldn’t dress up |
“The interest ________ be divided into four parts, according to the contract between the two sides,” declared the judge.
| A．may | B．should | C．can | D．shall |
—He should have come to join in the thorough cleaning.
—He _____. I don’t think it was his turn.
| A．needn’t have to | B．needn’t have |
| C．didn’t have to | D．doesn’t need to |
Hurry up, or you ______ catch the train.
| A．needn’t | B．mustn’t | C．can’t | D．shouldn’t |