1. 根据语境从方框中选择恰当的单词填空，有的需要变换形式，每词限用一次

research, situation, southwest, feed, baby

1. （1） Tom usually buys sausages tohis dog.
3. （2） Yunnan and Sichuan are in theof China.
5. （3） Don't worry. Mr Wang will help us in all kinds of   .
7. （4） They did lots ofabout India to know about this country.
9. （5） The twowere born at the same time.