— Must I finish my homework before class is over?— No, you ______. You can hand it in tomorrow.
It is said that his health ______ by years of hard working.
Does everyone know what to do if a fire ______?
It is obvious _________ he has known the news and he is very satisfied with the result.
We _______ in the office.
I’ll help you _______ I don’t sleep for night.