Question

--Look! The telephone is broken. Someone damaged it ________ purpose.
--That may be right. But perhaps it was broken _________ accident.

A．on; by

B．by; by

C．on; on

D．by; on

Answer 1

A

試題分析：考查固定詞組，on purpose意思“故意地”，by accident意思“不經意”，句子意思“看！電話壞了，某人故意破壞�？赡苁菍Φ�，但是也可能是不經意弄壞的”，所以選A
點評：固定句型要靠平時多記多積累，Someone意思“某個人”，but表示轉折，不和though/although連用。