Why do we have to ____ Sue’s selfish behavior? We should teach her to care for others.

Is _______ three hours _______ the poor boy to come to school on foot?

Hi, Peter. Long time no see.—–Oh, it’s you, Jack. I’m sorry I didn’t________you at first.

The drill in Antarctica dragged on slowly because of lack of money, equipment breakdowns, environmental _____ and severe cold.

I didn’t go to the mountains ______the bad weather.