题目内容
I don’t know _____
| A．how to use Ipad | B．what to use Ipad |
| C．how use Ipad | D．what use Ipad |
A
解析试题分析：句意：我不知道如何使用Ipad。疑问词+to do sth.作为宾语。What在从句中充当主语，宾语或表语。How在从句中充当状语。use Ipad不缺少宾语，故此处用疑问词how。故选A。
考点：考查疑问词+不定式。
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