分类：教育/科学-学习帮助
问题：单项选择13.jimandhiscousinaregoing__ 
13. jim and his cousin are going _______ homework now.
a. they b. them c. their d. his
回答：C

going---doing

homework是名词,形容词修饰名词,形容词性物主代词就是起形容词作用的

jim 和他表弟在做他们的作业