I didn’t see her in the meeting room this morning. She ______ have spoken at th
题型：不详难度：来源：
I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.| A．mustn’t | B．shouldn’t | | C．needn’t | D．couldn’t |
|
答案
| D |
解析
couldn’t have done sth 表示对过去情
况进行推测，意为“过去不可能发生过某情况”。 |
举一反三
He ______ the test again, in which case, his mother will be very disappointed. | A．might fail | B．must have failed | | C．should fail | D．could have failed |
|
“Why didn’t she come to the meeting yesterday?” “I’m not so sure. She ______ ill.”| A．should be | B．should have been | | C．must be | D．might have been |
|
“Is there a flight to London this evening?” “There _______ be. I’ll phone the airport and find it out.”| A．must | B．might | | C．would | D．can |
|
“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”| A．might fall out | B．could fall out | | C．should have fallen out | D．must have fallen out |
|
“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”| A．must; could | B．may; might | | C．need; must | D．could; need |
|
最新试题
热门考点