题目内容：

Mary met Jhon in the factory yesterday 改为强调句,分别强调地点和时间
各用 it was.
was it.
who was it that.
三种形式

优质解答

It was in the factory thatMary met John yesterday.
Was it in the factory thatMary met John yesterday?
Who was it thatMary met in the factory yesterday?
It was yesterday thatMary met John in the factory.
Was it yesterday thatMary met John in the factory
Who was it thatMary met yesterday in the factory
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