Many wage earners in big cities find they may only have enough to their houses, cars and other costs of living and have little extra money to invest.
A. pay off
B. pay for
C. pay back
D. pay
网友回答
A. pay off
(答案→)B. pay for
C. pay back
D. pay
解析：考察动词短语辨析。A还清，努力得到回报；B付钱买…；为…付钱；C偿还；D付…；句意：很多在城市里挣钱的人发现他们只有足够的钱去支付他们的房子，汽车和其他的生活费用，几乎没有钱来投资。故B正确。