Experts have been warning___of the healthrisks caused by passive smoking

What do you think of the pollution in our city— It’s getting more and more serious， we must stop pollution _____ longer.

My father has already decided to give up smoking.—Congratulations! .

Must we finish our homework today —No, you . You finish it the day after tomorrow.

Jenny likes hamburgers, I don’t like them. I think it’s bad for health.