The students worked in groups to ________ the difficult problem in the math class.
| A． |
work out |
B． |
turn down |
C． |
cut off |
D． |
worry about |
—Must I take the medicine every day?
—No, you _______.
| A．must | B．mustn’t | C．needn’t | D．can’t |
—I have a stomachache. What should I do?
—You _______ drink sweet water and _______ eat sweet food.
| A．had better not; shouldn’t |
| B．should; had better |
| C．had better; had better |
| D．shouldn’t; should |
—May I watch TV, Mom?
—I’m afraid you _______.
| A．should not | B．can’t | C．must not | D．may not |
We don’t know how to prevent the flu. Shall we ask Doctor Wang Hai for______?
| A．the advice | B．an advice |
| C．some advice | D．some advices |
—Humans can’t live _______ air.
—I agree with you.
| A．without | B．with | C．in | D．for |