作业帮his cousin often help (the old man) do some cleaning对括号里提问
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his cousin often help (the old man) do some cleaning对括号里提问
his cousin often help (the old man) do some cleaning对括号里提问
his cousin often help (the old man) do some cleaning对括号里提问
Who his cousin often help do some cleaning?
就这样可以了,问词直接提前