—Look at the sign! —Oh, I see. We ______ waste water.[ ]A. can B. mustC. mus
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—Look at the sign!
—Oh, I see. We ______ waste water. |
| [ ] |
A. can
B. must
C. mustn"t
D. needn"t |
答案
| C |
举一反三
| _______ you wait a few more minutes? It"ll be your turn soon. |
| [ ] |
A. Must
B. Should
C. Could
D. Might |
—Is that Mr Li under the tree?
—No, it ______ be him. He"s in the office now. |
| [ ] |
A. can"t
B. mustn"t
C. might
D. must |
—Can you come to my party on Wednesday?
—Sorry, I can"t. I _______ finish my homework. |
| [ ] |
A. may
B. would
C. have to |
| According to the new traffic laws, people _______ drive after drinking wine or beer. |
| [ ] |
A. wouldn"t
B. couldn"t
C. needn"t
D. mustn"t |
| The work is too hard for him. He _______ finish it on time. |
[ ] |
A. can"t
B. mustn"t
C. shouldn"t
D. needn"t |
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