__________ important for children __________ by themselves.
This English book ________Liu Mei’s, it has her name on it.
Something smells ____, and you are supposed to clean your house often.
The new kind of car is __________expensive. I don’t have ______money.
----Please tell me ___________________an hour ago.---He rode his bike.
The number of the workers in this factory ________1,500. A number of them ______ from the countryside.