Either Sam or Tom __________ an exam at the moment.
A. are having B. is having C. were having
相关试题
Remember to the lights when you leave your classroom.
| A．turn on | B．turn off | C．turn up | D．turn down |
--- How long has your brotherthe computer?
--- About two weeks.
| A．bought | B．had | C．received | D．borrowed |
These are your books. Please .
| A．take them away | B．take it away | C．take away them | D．take away |
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