This painting is so valuable that it is rather difficult to calculate its price would be if the museum to sell it.
A. how much; would want
B. what; wanted
C. what; wants
D. how much; wants
网友回答
A. how much; would want
(答案→)B. what; wanted
C. what; wants
D. how much; wants
解析：考查宾语从句和虚拟语气。句意“这幅画是如此的贵重，以至于计算它的价格是相当的困难，如果那家博物馆想把它卖掉的话。”calculate后的宾语从句缺少表语，用what，排除A、D；if引导虚拟语气，与现在相反，用一般过去时。故选B。