Question

—How did it _____ that you made such a silly mistake?
—I myself haven’t figured it out yet.

A．bring about

B．come about

C．come across

D．come on

Answer 1

B

解析试题分析：句意为：--你做出这么愚蠢的决定，怎么会发生这种事儿呢？--我自己也弄不明白（怎么会发生这种事情）。bring about 引起，使掉头；come about产生，发生；come across（偶然）遇到，碰到；come on加油，快点，开始。故答案为B
考点：考查动词的意思。