have any doubts about your health, you’d better______ your doctor at once.

It is very important for us to employ a word or aphrase according to the ______ in language studies

Do you expect tobe a possibility that we may have three days off for the coming New Year’s Day

Do you doubt ____ he’ll be fired by the school? — No, not a bit. But I doubt ____ he will bury himself into study.

It’s nice.Never before____ such a special drink!—I’m glad you like it.