— 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