【C19】A．could beB．must beC．should beD．would be

【28】A．can beB．may beC．must not beD．may not be

The two strangers talked as if they ______ friends for years.A．should beB．would beC．have b

It is necessary that measures _____ taken right now.A: beB: must beC: will beD: can be

If the captain ____more careful, his ship would not have been sunk.A．should beB．were to be

It is impossible for there______any more beer in this bottle.A．beingB．would beC．beD．to be

My father ______ sixty next year.A、is going to beB、is to beC、will beD、is about to be