What do yoy promise __(do) to keep the earth clean.

What do yoy promise __(do) to keep the earth clean. We promise to keep the Earth clean.(对划线部分提问)(划线的是keep the Ea what should we do to keep water clean what do you think __(save)in the computer to keep save? 英语The important thing is to keep the earth clean. What___you___to do to keep the room clean?A.do,have B.does,h What should we do to save the earth?是什么时态 What else can you do to protect the Earth? what do you do to keep fit what do you do to keep healthy? what do you promise not to do翻译 They will do the best to keep the e.clean在字母