Stress can be extremely damaging to your health. Exercise, _, can reduce its effects.

I heard the alarm ringing all the morning. ____ something very urgent happened.

My boss hates interruptions,       when he is trying to work.

It was raining heavily. Little Tom felt cold, so he stood ______ to his mother.

We have done half the work so far. _____, we’ll have finished it by December.

She devoted herself ______ to her research and it earned her a good reputation in her field.

_______, he doesn’t study well.

The latest model of camera can           brings the object into focus, with which even a child can shoot very well．

--- Do you think that the 11th Chinese National Games were a success ?
--- Yes, ___! It couldn’t be ____ .

You’d better book the tickets in advance; _______ we may miss the concert.