－Will Daniel come to our gathering? (福建省)－______not,for he is much too busy with his research work. 

Work gets done __________ when people do it together and the rewards are higher too.

I got to know him five years ago. We have been in close touch with each other ______.

She is _____ out on Sundays.

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