—I’m sorry, but the boss isn’t here yet. Shall I have him call you when he comes back?—No, I’ll call him back. If I call again in half an hour, do you think she ________ ?
Some children are too selfish today. They should be taught to _____things with others so that they will show concern for others.
Some people would rather ride bicycles as bicycle riding has _____of the trouble of taking buses.
--Do you have any trouble _____the work? ---No. in fact we have finished it already.
________ large number of people think ________ truth has been hidden on purpose.
I won’t have anyone _______ in here. _________breaks the regulation will get punished.