When he walked my desk he knocked my books the floor.A. passed; onto B. past; onto C.

问题补充：

When he walked my desk, he knocked my books the floor.

A. passed; onto

B. past; onto

C. passed; into

D. past; into

答案：

A. passed; onto

(答案→)B. past; onto

C. passed; into

D. past; into

解析：句意：当他走过我的办公桌时，他把我的书撞在地板了。pass 是动词通过之意，past 是介词经过之意; onto到……上； into到……里，故选B。

考点: 考查动词和介词的用法。