— you got to know my telephone number?
— Through a friend of yours.
A. How was it
B. How was it that
C. Was it how that
D. How did
网友回答
A. How was it
(答案→)B. How was it that
C. Was it how that
D. How did
解析：
这题考查强调句的特殊问句，结构是：特殊疑问词+is/was+it+强调部分？只有B符合，意思是：--你是怎么知道我的手机号码的？--通过你的一个朋友。