What were you doing this time yesterday?若强调部分是what怎么写强调句

问题描述:

What were you doing this time yesterday?若强调部分是what怎么写强调句
还有类似的I wonder what you were doing this time yesterday.(强调what)
What John said disappointed all hie classmate.(强调disappointed)

What was it that you were doing this time yesterday?I wonder what it was that you were doing this time yesterday?What John said did disappoint his classmates.