—The light in his office is still on. Do you know ?
—In order to prepare for tomorrow’s meeting.
| A．if he works hard | B．why he stays up so late |
| C．that he is so busy | D．when he will stop working |
相关试题
We don’t think it’s good to stay_____ late to play computer games.
| A．on | B．up | C．from | D．out of |
Usually, it’s easier to make decision than to take action.
| A．a; an | B．／; an | C．／;／ | D．a;／ |
—What is a writing brush used for?
---- It’s used _____writing and drawing.
A.as B. to C. for
The Internet is really＿＿＿to us．We can easily find information on it．
A．boring B．useful C．interesting
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