问题补充：
To tell the truth, if it were not for the fact that youmy daughter, I would not take such pains to serve you.
A. were
B. had been
C. are
D. have been
答案：
A. were
B. had been
(答案→)C. are
D. have been
解析：考查时态。本题很容易错寻B项，错误的认为这是一个与过去事实相反的虚拟语气，使用过去完成时的形式，实际上本题是一个同位语从句that you are my daughter，对名词the fact进行解释说明。名词the fact后面的句子是不要使用虚拟语气的，只需要使用陈述语气即可。故C正确。
