—Excuse me! Sir, is the swimming pool open all day?— .Only from 6:00 p.m. to 10:00 p.m.
5.Is ____ necessary to complete the design before National Day?
6.I don’t think ____ possible to master a foreign language without much memory work.
7.Does ______ matter if he can’t finish the job on time?
8.I was disappointed with the film . I had expected ______ to be much better.
9. The doctor advised Vera strongly that she should take a holiday, but _______ didn’t help.