[题目]My sister doesn’t know the secret to math.A. learn B. learning C. learned D. learns 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】My sister doesn’t know the secret to ________ math.

A. learn B. learning C. learned D. learns

【答案】B

【解析】

句意：我姐姐不知道学习数学的秘诀。考查介词用法。根据the secret to可知，……的秘诀，to在这里是介词，后加名词或动名词，故选B

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