A、  B、  C、  B本句是询问衬衫多少钱的How疑问句。应该了解How much…是询问价格的表达。

Who sent us the registration forms for the seminar?
(A)By the end of June.
(B)I’ll fill them out now.
(C)I think it was Mr. Warner.

How much did that shirt cost you?
(A)Yes, blue looks good on you.
(B)It was on sale for $9.99.
(C)At the shopping mall.