第12题: [单项选择]In the (nineteenth) century, people (lived in) the northern area grew (their) crops on river (bottom lands). A. nineteenth B. lived in C. their D. bottom lands 参考答案:B 答案解析:应改为living n。现在分词形式living in the northern area在该句中作people的定语,就相当于people who lived in the northern are