-- Is that girl Susan?-- It ______ be her. She left for Beijing yesterday.A. needn't B. can't C. mustn't
You should cut up the meat _____ before cooking.
John fell asleep _______ he was listening to the music.
It took her______ to cook the delicious food.
I shall turn ____ our teachers when I’m in trouble.
—Mom, my classmates invited me ____ a field trip. May I go with them? —OK.