Keeping the window clean to have more fresh air 这句话有错吗?

Keeping the window clean to have more fresh air 这句话有错吗? would you mind keeping the window it is very cold today.A.opening B.open C.closed D.to close我已经知道了答案是c 可为什么是c呢? Nothing was found but___broken.A.the room window B.the room's window C.the room of the window.A.the room window B.the room's window C.the room of the windowD.the window of room为什么 keeping off the police the un peace-keeping the un peace-keeping the un peace-keeping The pot _ for _hot water .A used; keeping B was used; keeping C is used; to keep Dused; keep He lives in the room____faces south.A.of which the window B.which window C.the window D.of whose window写下具体的分析! please o< >the window and c< >the door while i was c the window c后添什么 Nothing was found but___broken.A.the room window B.the room's window C.the room of the windowD.the window of room. the open window还是the opening window keeping The chemistry teacher required the students___more attention ___the lab clean.A.to pay,to keepB.to paying,to keeping C.paying,keeping D.to pay,to keeping求详解 ( )3.cats is my hobby.A.Keep B.Keeping C.Keeps D.Keep the 英语,关于名词的一道题Nothing was found but ___ broken.A.the room window B.the room’s window C.the room of the window D.the window of room The students are always ----English or Chinese every morning on weekdays.A.kept reading B.keeping reading C.kept at read D.keeping to read为什么