—MichaelwaslateforMr.Smith’schemistryclassthismorning....

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—Michael was late for Mr. Smith’s chemistry class this morning.

—________? As far as I know, he never came late to class.

A. So what B. Why not C. Who cares D. How come

试题分析：句意：——今天上午斯密斯老师的化学课上迈克尔迟到了。——怎么会呢？据我所知，他上课从不迟到。A. 那又怎么样呢；B. 为什么不呢；C. 谁在意呢；D. 怎么会呢。根据语境，故选D。