-Can Professor Li be in the laboratory?-He ________ be; I saw him there half an
题型：同步题难度：来源：
-Can Professor Li be in the laboratory?
-He ________ be; I saw him there half an hour ago. |
| [ ] |
A．can
B．must
C．might
D．need |
答案
| C |
举一反三
| He ________ have sent the email at an earlier time, but there was something wrong with the network. |
| [ ] |
A．must
B．should
C．could
D．might |
It has been announced recently that all the schools ________ not have the students attend school if the
students have high temperatures. |
| [ ] |
A．need
B．shall
C．could
D．ought to |
-I"ve gained weight these days.
-You ________ have eaten so much junk food. |
| [ ] |
A．wouldn"t
B．couldn"t
C．shouldn"t
D．mustn"t |
Since drinking water is a limited resource, we ________ let children know how precious it is, and teach
them to conserve it. |
| [ ] |
A．might
B．would
C．should
D．could |
| He is a badtempered man, but he ________ be quite charming when he is cheerful. |
| [ ] |
A．shall
B．must
C．dare
D．can |
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