_____of modern agriculture, more and more waste is produced.

– Do you have any idea which to choose?

--- Well, you’d better take this one. It’s ______in price and good in quality.

– What are you advertising ______?

---________. I need a place to stay at.

Since advertising can increase sales of production, _____it can _____the price.

A dark cloud is a _______of rain.

Deaf people talk ________.

Seeing the man on the bike with a boy at the front and the other at the back, the policeman signed _______stop.

.A ________may be given ____means of flags, lights, and guns.

There are many other ways to advertise _______ broadcast advertisements on radio and TV.

– I spent $ 20 for this shirt. How much is yours?

--- I just paid ______.

A. half the money              B. half

B. halves                     D. the half money