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

分类: 作业答案 • 2021-12-20 03:20:03

问题描述：

答

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

答

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

答

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

答

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