题目内容：

Would you like to go to the zoo tomorrow?I'd love to,but I am afraid I have a lot of homework_them
a.do
bdoing
c.to do

优质解答

选c.to do表将来 ,做homework的定语

追问：

doing不行？

追答：

doing不行，它是现在分词，表动作正在进行。