题目内容：

1.Your shoes are dirty.Please w_____ them.
2.Sam's house is next to the school,so he usually w_____ to school.
3.Brad opened the box and found n_____ in it.

优质解答

wash洗
walk
nothing

追问：

不是吧，第一个可以填washes吗？第二个可以填walks吗？

追答：

第一个要用原形,祈使句,要用原形 第二个你说得对,应该是三单形式,walks