--Are you getting a new car this year?--You must be joking! I can’t afford to pay my bills

问题补充：

--Are you getting a new car this year?

--You must be joking! I can’t afford to pay my bills, buy a new car.

A. let alone

B. or rather

C. leave alone

D. other than

答案：

(答案→)A. let alone

B. or rather

C. leave alone

D. other than

解析：let alone 更不必说 or rather倒不如说 leave alone 听其自然 other than不同于，根据题意选A，我连账单都付不起，更不用说买一辆新车了。