The room is in a terrible mess; it _______ cleaned.
| A．can’t have been | B．shouldn’t have been |
| C．mustn’t have been | D．wouldn’t have been |
So difficult ________ it to live in an English-speaking country that I determined to learn English.
| A．I have felt | B．have I felt | C．I did feel | D．did I feel |
In____review of 44 studies, American researchers found that men and women____who ate six key foods daily cut the risk of ______ heart disease by 76%.
| A．a; the | B．the; a | C．a; 不填 | D．不填； a |
Terribly sorry, I came home at last. I _____of the supermarket ________so crowded.
| A．should have thought; being | B．should think; being |
| C．could have thought; was | D．could think; was |
With a basket on her back, the little girl is walking along the stream with green grass and red flowers ____ on both sides.
| A．to grow | B．grown | C．growing | D．being grown |
The report said a bus went out of ____control on a highway ____south of the city and rushed into a river.
| A．the ,the | B．/ ,the | C．the, / | D．/,/ |