Question

When he walks _____ my desk, he often knocks my books ______ the desk.

A．pass; off

B．past; off

C．pass; on

D．past; on

Answer 1

B

试题分析：pass为动词，而第一空之前的词为动词，故选介词，所以将BC排除，knock sth on sth意思为用····敲···，为固定词组搭配。故选答案为B
点评：许多学生，对于pass的词性，注意对于介词off 与on的把握。