His work _____ have been completed; otherwise, he wouldn’t be enjoying himself on the beach.
| A．should | B．shouldn’t | C．can’t | D．must |
It is so difficult a problem that ____ student in this class ____ work it out.
| A．any; can't | B．no; can | C．every; can | D．no; can't |
The water company appealed ______ everyone ______ the amount of water used.
| A．for; to reduce | B．to; reducing |
| C．to; to reduce | D．for; reducing |
--- It’s so late. Our son______ be back!
--- Don’t worry. I dare say he ______ have some extra work to do.
| A．can; must | B．will; might | C．should; must | D．must; may |
To every one of us present ______ the honour for the great success.
| A．belongs | B．belonging |
| C．is belonged | D．belong |
Eating too much fat can ______ heart troubles and high blood pressure.
| A．attach to | B．attend to | C．contribute to | D．devote to |