We’ll hold the speech contest in the school hall, which is large enough to ____ five hundred people. 

The computer system________suddenly while he was searching for information on the Internet.

—Nancy, would you please remove the big box here to make some room for my books?— Of course, but_____, I want to select some of your books to read.

Since she is a doctor,she must　　the patients.

I am really worried about his grades in the coming test because of the little use he ______ of his spare time before it.