— Mary, whose photo is it?—It ______ be Lu’s. Those are her parents.

-I didn't go to the art show, because I lost my ticket．-You______have borrowed mine I didn't go to see it anyway

How ________ I help them to understand when they don’t listen?

 －Must I go and get some water now?   －No, you __________.

____ I fill in the application form right now, sir? No, you needn’t. You can complete it this afternoon.