--My father ___________ a letter yesterday, but I’m not sure if he has finished it.
---Why not ask him about it ?
| A．wrote | B．was writing | C．has written | D．writes |
—May I ask you some questions, Dr. Wang? —_______
A. You’re welcome.
B. Sure, go ahead.
C. No, I’m busy.
—Who taught you Japanese? —I learned it by _______.
A. myself B. yourself C. yourselves
You are much too fat. You’d better _______ too much meat.
A. not eat B. don’t eat C. not to eat
—Must I take the medicine every day? —No, you _______.
A. must B. mustn’ t C. needn’t
Michael, you should learn teamwork and pass ______ often.
A. the ball me
B. me to the ball
C. the ball to me