When he was opening the door, he was ___________ that he was being followed by a policeman.
| A．conscious | B．casual | C．careful | D．doubtful |
—Why don’t we choose that road to save time?
—The bridge to it __________.
| A．has repaired | B．is repaired  |
C．is being repaired | D．will be repaired |
In order to find _______ better job, he decided to study _________ second foreign language.
| A．the; a | B．a; a | C．the; the | D．a; the |
—I don’t care what people think.
—Well, you _______
| A．could | B．would | C．should | D．might |
Owen wouldn’t eat anything ____________ he cooked it himself
| A．until | B．since | C．unless | D．while |
— I wonder ________ you’ll water this kind of flower. 
——Every other day.
| A．how often | B．how long | C．how soon | D．how much |