Mary wanted to travel around the world all by herself but her parents never her to do so.
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.