By the year of 2053 there will be 487 million aged people in China, means that one third of the population will be over 60.
They started early that morning in order that they_____ there before noon.
Mary cares about clothes too much, and she _____ too much money _____ clothes.
"_____ of them are not here." means "_____ of them are not here."
We must do something to _____ factories _____waste water into the river before it is cleaned.
What way are you thinking of _____ rid of the flies?