. —Why is it ________ so many people enjoy eating on the run?

—Of course, the most obvious answer is that fast food is fast.

A. that                     B. which                  C. what                    D. how

A


解析:

本題考查特殊疑問句的強調(diào)用法，特殊疑問詞why放在句首，即疑問詞+is/was that….

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