For some time the expert __________ people of the health risks caused by passive smoking. He says he won’t stop until all the smokers around him decide to quit smoking.
Listening to peaceful music. as well as taking exercise,___________ a lot in relieving people 's sad emotions.
The man__________has made up his mind to win will never say "impossible".
Only when___________ according to the directions can the medicine be quite effective.
To be successful, you need to remember that ___________you might be very busy, you need to be energetic and enthusiastic.
Not until all the fish died in the lake __________ how serious the pollution was.