— Who____ it be that is knocking at the door? — It ____ be Father, but I"m not s
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— Who____ it be that is knocking at the door?
— It ____ be Father, but I"m not sure. |
| [ ] |
A. can; must
B. can; may
C. must; can
D. may; must |
答案
| B |
举一反三
| When we were young, every evening we ____ stay at home waiting for our mother. |
| [ ] |
A. would
B. might
C. should
D. could |
| If you were in better health now, we _____ let you do it. |
[ ] |
A. will
B. could
C. would
D. can |
| I haven"t been home to see my parents for two weeks; I _____ them. |
| [ ] |
A. can"t wait see
B. can"t wait to see
C. can wait for
D. couldn"t wait for |
| It _____ last night, for the ground is wet. |
| [ ] |
A. must rain
B. must have rained
C. must be raining
D. can"t have rained |
| I _____ go there alone, but he _____ go there by himself. |
| [ ] |
A. dare; doesn"t dare
B. dare to; dares not
C. dare; dare not
D. dare to; doesn"t dare |
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