when do you do 改同义句

问题描述:

when do you do 改同义句
when do you do ____your ____?这样填空 改

“when do you do”此举为病句,因为第二个do是及物动词,后面必须有宾语,但是句子里面没有.
如果原句为“What do you do?”则=What's your job?