—Are you pleased with what he has done?—It couldn’t be ________ . Why didn’t he put more effort into his work?
_________the peace talk between the two countries will break down depends on your attitude.
It was __________ you had done ________made it possible for you to improve your English.
—May I use your computer?—Sure, _____________
— What’s the matter? — The shoes don’t fit properly. They _____ my feet.
In this experiment, they are woken up several times during the night, and asked to report what they _____.