. Marry notices are placed in the park warning people to ____ the grass.
By the time she ________ tomorrow, the work ________.
Some people waste a lot of food ________ others haven’t enough to eat.
. School children must be taught how to deal with dangerous ________.
The survey shows that ______ of the population in the country ______ adults.
. The workers do nothing but _______ tea and talk to each other.