7. The questionnaire takes       ten to fifteen minutes to complete and can be used along with the assessment interview.

History is _______ a subject which only lets us know something in history..

 —Do you regret paying ten dollars for that book?—No, I would gladly have paid ________. 

．We’ve published large quantities of books. This year______ we’ve published three million copies.

I’m afraid we can’t come, but thanks for the invitation_________.