单选题25.—I don't understand how you got a ticket. I always thought you were a careful driver. —______, but I thought I could get through the intersection before the light turned.
【正确答案】
C
【答案解析】“I usually am”是省略句，完整的句子应当是“I am usually a careful driver”。usually修饰表语时通常要放在be动词之后和表语之前，但在省略了表语的省略句中要放在be的前面，在说话时要重读。