题目内容
He didn’t know _______ next, so he asked his teacher for help.
| A．how to do | B．what to do it |
| C．how to do with it | D．what to do |
C
解析试题分析：句意：他不知道接下来怎么做，因此他向老师寻求帮助。结合句意，it做do的宾语，故选C。
考点：考查how从句和what从句的辨析。
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