Maxoften

问题详情：

Max often ______our books and pens ______the floor, when he ______our desks.

              A. knocks, onto; walks past        B. knock, onto; walks passed

              C. knocks, off; walks past          D. knocks, off; walks passed

【回答】

A

知识点：动词和动词短语

题型：选择题