I don’t think your children could have been used to the quick pace of life while working in Shenzhen, _____they?—_____. They thought of returning to Changchun.

It is in their ability to speak________humans________from animals.[ ]

The sun woke me up early, ______ I had stayed out very late the night before.

Nowadays, more and more people would rather ____ __ in the country, because there is __ ____pollution there than in the city.

Sometimes the boy is a bad-tempered child, but he ____ be quite lovely when he wishes．