— We are going to play soccer, will you join us?
—I’d be ________, but I have much to do now.
A. glad B. glad to C. be glad to
—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