Can you please tell me___?A.if I could get the book B.where I could get the bookC.how to get the book为什么选C?

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Can you please tell me___?A.if I could get the book B.where I could get the bookC.how to get the book为什么选C?
Can you please tell me___?A.if I could get the book B.where I could get the book
C.how to get the book
为什么选C?

Can you please tell me___?A.if I could get the book B.where I could get the bookC.how to get the book为什么选C?
C
Can you please tell me...
Can you please表示一种很客气,很委婉的请求.
你都那么客气了,还不问点儿实质性的东西?
自然是C ,请告诉我怎么找到那本书好吗?
而且从语法上讲,Aif 不引导这种从句,用whether I could get the book or not.
B至少 应该用can 不能用could 这种过去时.

更符合口语,其它两句中的I COULD不常用在这

A,B当中的could语气不对,应改为 can

C.
前面问题都是 现在时 用 can
而 A,B 选项都是 过去时 用 could
只有 C 的时态是对的