—Have you watered the plants yet, Kathy? —Yes. I ________ that this morning.
| A．will do | B．did | C．have done | D．was doing |
—Excuse me, can you give me a _______?
—Sure.
A. hand B. help C. call
---Would you mind ______ the window, please? It’s too hot.
---Not at all.
A. opening B. to open C. closing
You _____ __ wash your hands before meals. It is good for your health.
A. must B. can C. have to
— May I ask you some questions?
— ______________
A. Yes, he may. B. Sure, go ahead. C. Of course not.
You’d better _______ too much meat. You are much too fat.
A. not eat B. don’t eat C. not to eat