Is it only on the world market ________we can prove the competitiveness and quality of our goods?

This book by TonyGarrison is of great use for our course — But Ithink his latest one is ______ worth reading

He’s passed the exam. —_____.

In many places in China, the old over 90 ______not only by their family but also by the government.

The text is _______easier and _______interesting thanthat one.