I guess we ‘ve already talked about thisbefore but I’ll ask you again just _____.

She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.

We’ll continue to learn by ourselves when we have left school, we must _______ learn how to study in the school now.

______ hard work, but completing it gave me_____ deep sense of satisfaction

reported, it is 100 years _____________Qinghua Universitywas founded.