问题
选择题
My father prefers taking a subway to driving his own car. Because the petrol is very expensive.
A．dear
B．good
C．bad
D．cheap
答案
答案：D
题目分析：句意：我爸爸宁愿乘地铁也不愿开自己的车，因为汽油太贵。prefer… to…比起……更喜欢……，后跟名词或动名词，expensive=dear昂贵的，故选D。