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Time spent in a bookstore can be enjoyable, if you 【S1】______

A.
B.
There
C.
【S1】

【参考答案】

if→whether
if→whether

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听力原文：A: Could I first ask you a few questions about your background?B: Yes, of course.

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听力原文： This novel costs two ninety-nine. This book is one pound forty-two. And that pocket dictionary is priced at fourteen twenty-four. You gave me two ten pounds. Let's look at the calculator and find out how much change I'll give you.(16)