He was taken away by the police. He _________ a very serious crime.
| A．must be committed | B．was being committed | C．must commit | D．must have committed |
相关试题
________ well in an interview will 
be an important part of getting a place at university.
| A．Do | B．Doing | C．Done | D．Being done |
In our country, every boy and every girl the equal right to go to school.
| A．has | B．have | C．is | D．are |
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