(湖南省雅礼中学2009届高三第七次月考 )—Are you pleased with what he has done?—It couldn’t be ________ . Why didn’t he put more effort into his work?

We can’t get the machine to run. There must be ______ with it.

Your are ______ to suffer from bad health if you keep smoking.

Of the two, I prefer to choose _______ camera, which is lighter and easier to carry.

The patient is supposed to go to the hospital for_____checks．