本页仅为文字内容，不可回答。
课后提高
用所给词或短语的恰当形式填空
die of ... no longer be aware of... traffic jam quality main serious cause used to
according to ...
You have to answer these questions _____ the text.
Many children _____ hunger in Africa.
He_____ not _____ his mistakes until the teacher told him.
Sorry, Im 20 minutes late because of the _____ on the way here.
Carelessness always _____ driving accidents.
His father _____smoke, but now he doesnt.
Her mother is suffering from a _____ heart disease.
_____ is more important than quantity.
He told me he world _____ go shopping with me.
This is the _____ building of our college.
