— Where is Bob? I cannot find him anywhere.— He ________ have been off long. I h
题型：同步题难度：来源：
— Where is Bob? I cannot find him anywhere.
— He ________ have been off long. I heard him make a call just now. |
| [ ] |
A. shouldn"t
B. can"t
C. mustn"t
D. needn"t |
答案
| B |
举一反三
| He ________ a big fortune, but he was too lazy to seize the opportunity. |
| [ ] |
A. can have made
B. could have made
C. must have made
D. ought have made |
— Do you still remember the day when we went to the Great Wall?
— I can"t remember it well, but ________ it have been sometime last year? |
| [ ] |
A. would
B. must
C. could
D. should |
| What a pity! Considering his intelligence and diligence, he ________ a higher grade. |
| [ ] |
A. can have achieved
B. must have achieved
C. need have achieved
D. might have achieved |
— Where is my dictionary? I remember I put it here yesterday.
— Perhaps, you ________ it in the wrong place. |
| [ ] |
A. must have put
B. should have put
C. can have put
D. might have put |
— Sorry, the tickets have already been sold out.
— Really? Maybe I ________ a little earlier. |
| [ ] |
A. should come
B. should have come
C. could have come
D. must have come |
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