He devoted most of his time to his research, believing his hard work would___sooner or later.
– What are you advertising ______? ---________. I need a place to stay at.
– Do you have any idea which to choose? --- Well, you’d better take this one. It’s ______in price and good in quality.
_____of modern agriculture, more and more waste is produced.
We have 24 offices, each ____computers.
.A man may be known ______- he keeps.