问题
选择题
-- Do you know ________ her mobile phone? -- No, I think it cost her around 4000 yuan.
A．when your sister paid for
B．how much your sister will pay for
C．how much your sister paid for
D．when did your sister buy
答案
答案：C
题目分析：根据回答，不知道，我认为大约花费了他4000元。宾语从句的结构：主语+谓语+连接词+从句。从句在句中作宾语。从句要用陈述句的语序。如果主句是一般现在时，从句根据需要选择时态，如果主句是过去时态，从句要用相应的过去时态。但是从句是客观真理，一般用一般现在时态。根据句意，可知用过去时态，问价钱，故选C。