21. For him ____ stage is just ___ means of making a living.
A. a; a B. the; a C. the ; the D. a; the
22．I think you _____ your parents you were going to be late. They were very worried.
A．must have told B．should remind
C．could have promised D．should have told
23. I’d rather you ______ by train, because I can't bear the idea of your being in an airplane in such bad weather.
A. would go B. should go
C. went D. had gone
