【題目】 —Can you help me, Mom? Today’s homework is difficult. I don’t know __________________ to solve it.

—OK, I’m coming.

A. how B. what C. where D. when

【答案】A

【解析】句意：——媽媽，你能幫幫我嗎？今天的作業(yè)很難，我不知道怎么做。——好的，我這就來(lái)。表示＂如何＂用how。根據(jù)句意可知選A。

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