问题
选择题
--- The MP3 cost me about 2,000 yuan.
--- Well, it was crazy of you to spend so much money_____you could buy a cheaper one.
A．when
B．unless
C．if
D．because
答案
答案：A
四个学校分别表示当……时候、除非、如果和因为，根据题意选A，嗯，你疯了，当你能买一个更便宜的的时候，你花这么多钱 。