I ______ have worried before I came to the new school, for my classmates here are very friendly to me.
A. mightn’t B. mustn’t
C. needn’t D. couldn’t
It was so noisy that we hear ourselves speak.
A. couldn’t B. shouldn’t
C. mustn’t D needn’t
You ____ be Carol. You haven’t changed a bit after all these years.
A. must B. can
C. will D. shall
Without his wartime experiences, Hemingway____ his famous novel A Farewell to Arms.
A. didn’t write B. hadn’t written
C. wouldn’t write D. wouldn’t have written
If I _____it with my own eyes ,I wouldn’t have believed it.
A. didn’t see B. weren’t seeing
C. wouldn’t see D. hadn’t seen
—Can’t you stay a little longer?
—It’s getting late. I really _____go now, My daughter is home alone.
A. may B. can
C. must D. dare