The woman ______ be our English teacher. She has gone to Canada.A.can’t B.needn’t C.mustn’t
—Listen! There someone at the door.—It must be your sister.
The movie is so interesting that I don’t seeing it again tomorrow.
We to start at once, or we will miss the train.
—How many times Carl to the Great Wall?—Only once.
The traffic signs warn people after drinking.