问题

Look! The window is brokenSomeone broke it _____ purpose— That may be rightBut perhaps it was broken _____ accident[ ]
A: on; by
B: by; by
C: on; on
D: by; on
B: by; by
C: on; on
D: by; on
正确答案是:
同类题型
Some people themselves by reading; others have been by the radio and television.
I don’t imagine Russ and his poor dog had a good time on the deserted island,________—I have no idea
When are you _____ your next exams? —– Next month.
You are late again, Tom? — Sorry, but I got ________ a heavy traffic jam.