I () clean the room last saturday?括号了填什么

I often ____(clean) the room. I clean the room改为否定句 I need to clean the room. Need I clean the room?与Must I clean the room?有什么区别 I clean the room 还是I am clean the room 为什么?不懂啊 仔细点 是clean the room 还是clean room? I often help my mother clean the room.如果clean改成to clean对吗? I must clean the room.改成被动语态 I need to clean the room改为否定句 Must I clean the room now No you don't_______ I am going to clean the room改为同义句 I have been——（clean）the room I () clean the room last saturday?括号了填什么 do i have to clean the room怎么回答 I clean the room every day.句子结构 I clean my room on the weekend改为否定句 I tried to keep the room being clean对? ------Must I clean the room? 的肯定回答