— Could I clean the bedroom for you?— No,thanks.I — it myself.答案问什么是这个呢have cleaned

i could help clean up the parks. could是什么词? help 和 clean都是动词,这样可以吗 --Could you do the dishes,Mary?---Sorry,don't you see I ( )(clean)the room? Could I clean the bedroom for you?A.have cleanedB.had cleaned 选哪个 Could you help me clean the classroom?I can't do it m______ I'd like to work outside.You could help clean up the city parks.为什么用could — Could I clean the bedroom for you?— No,thanks.I — it myself.答案问什么是这个呢have cleaned Could you please help me clean the yard now,Peter?------_______,Mum.I'm in the bathroomA Sure B Sorry i must____(clean) the classroom. ____ I clean the door?no,you ___.A.need;mustn't B.must C.may D.could I have been——（clean）the room could you help me clean the living room Could you please clean the living room的同义句 You could wash and clean the car for them.这You could wash and clean the car for them. The classroon is so clean.Someone---(could/must)clean it just now. _____ clean the blackboard No,I can't,I'm too busy.Are you going to could you please Must you Tony could help _______ the city parks.A.clean B.clean up C.clean out D.cleans up 说明原因 Danny_____(认为)he could hit the ball,but he hurt his hand.空里应填什么,写出,并说明理由.还有：I often help my mother _____(clean)the room. —Could you help me clean this car?—___________.我填的Yes,I could但正确答案是Certainly(当然）还是第二个更恰当?