—Must I return the book this week?— No, you ____. You can ____ it for 20 days.

—What is the result of the survey?—15% of those surveyed worry that in the long term children _________ be more dependent on their parents, which does no good to them.

He is sweating heavily. He _______ weightlifting for a long time.

As a well-known Chinese saying goes, “If you want to be rich, you______ first build roads.”

If you           spit at all, please spit in the bucket(痰孟里)provided