I see a man behind me(改一般疑问句) helen is good at singing（同义句）

题目

I see a man behind me(改一般疑问句) helen is good at singing（同义句）

答案

① I see a man behind me(改一般疑问句)
Do you see a man behind you
②helen is good at singing（同义句）
Helen does well in singing.