The box _____. Better call in a mechanic(修理工). A isn’t open B hasn’t been open C isn’t be open D won’t open
The information on the Internet gets around much more rapidly than _____ in the newspaper.
Eric received training in computer for one year, ______ he found a job in a big company.
To save class time, our teachers has _____ students do half of the exercise in class and complete the other half for our homework.
I need some red ink badly, but there’s _____ at hand.
The school music group will be giving a big show tomorrow and two __ on the weekend.