Speaking loudly in public is a kind of behavior(行为), so we should learn to avoid this situation.

Grace doesn’t want to move to New York because she thinks if she _____there ,she wouldn’t be able to see her parents very often.

Look! Someone is cutting a tree on the moon.–It _______ be true, Granny. Our teacher says there isno air there.

I’d like to join the school volunteer project, but I’m not sure _____.

I’m sorry. I’ve broken your glasses. —____________.