24. — Someone is knocking at the door. It _________ be Tom.
— No, it ________ be him; he has gone to Sydney.
| A．must; can’t | B．might; mustn’t | C．may, needn’t | D．can; mustn’t |
Though great efforts have been on their study , Annie still can’t make any improvements , which makes her parents greatly ______ .
| A．made ; disappointed | B．done ; disappointing |
| C．taken ; disappointed | D．given ;disappointing |
—Americans spend more on health care than most other people .
— You’re right . But a new study shows that life in the United States is falling .
| A．development | B．position | C．experience | D．expectancy |
Now the workers in the firm are laying on oil pipeline the desert .
In fact , the old couple looked forward every week their grandson .
| A．to see | B．to seeing | C．see | D．seeing |
Just then it suddenly to me that the two of us could share the dinner together .
| A．happened | B．hit | C．occurred | D．struck |