帮个忙回答一下：-______ Jack _______ (clean) his room last weekend?-Yes,he did.
问题描述：
帮个忙回答一下：-______ Jack _______ (clean) his room last weekend?-Yes,he did.
答
Did Jack clean his room last weekend? -Yes,he did
答
did，clean。
答
Did clean!这是个一般疑问句。last weekend和它的肯定回答表明该句是过去式
答
did, clean
答
1 Did
2 clean
答
Did clean