Was the machine invented by Bill she wasn't sure合并成一句.谢谢了###

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Was the machine invented by Bill she wasn't sure合并成一句.谢谢了###

She wasn't sure was the machine invented by Bill.

She wasn't sure whether the machine was invented by Bill.

she wasn't sure If the machine invented by Bill .

She wasn't sure whether the machine was invented by Bill.
正解。。。