The two girls are to go to school by themselves.—I agree with you. They can take care of .

Come on, please give me some ideas about the project. — sorry, with so much work _____ my mind, I almost break down.

When the last prize had been awarded _________ everybody cleared off

How do you deal with the disagreement between the company and the customers–The key ________ the problem is to meet the demand _______ by the customers.

They promised ____________ such kind of mistakes again.