I couldn't afford to rent a house like this buy it.A. no longerB. no more thanC. let alone

问题补充：

I couldn afford to rent a house like this,buy it.

A. no longer

B. no more than

C. let alone

D. instead

答案：

A. no longer

B. no more than

(答案→)C. let alone

D. instead

解析：let alone。为固定短语“更不用说”、“不必考虑”。