Though the “No smoking” signs have existed for long in public places, heavy smokers often ________ them and light up cigarettes.
_____of modern agriculture, more and more waste is produced.
We have 24 offices, each ____computers.
.A man may be known ______- he keeps.
The advertisement ____ always ____ people’s attention.
We did the work ______, and as a result, we were taken in.