-–Mary knows the city quite well.
--She______ well have been there before.

—Mr. Smith, why are you always asking me to do the difficult work?
—Because you _______ do such a thing and nobody else is fit for it.

On Sundays ,the retired(退休的）minster_____ come to the farm and work with the farmers.

If you won’t do as I told you, you____ not go to the party.

Thomas _____ a soldier, for he is much too short.

--- He worked out such different questions at a very young age.
--- Oh, he ______ a very smart student then.

---I think Helen is at home.
---No, she    be at home, for she phoned me from the airport just five minutes ago.

– How’s your new class teacher?
– We ______ ask for a better one. All my classmates love him so much.

—Why did you leave without a word of warning to John?
—But what _____ otherwise? He never listens to me.

If you ___ stick to the unrealistic approach, the worse result will be waiting for you not far ahead.