The room requires being cleaned.为什么要把being cleaned改为cleaning 或to be cleaned

The room requires being cleaned.为什么要把being cleaned改为cleaning 或to be cleaned 是什么已踢: You were disconnected from the room because this room requires a 安装SharpDevelop为什么跳出this setup requires the .Net 4.0 Full Framework to be installaed. There_____(be)many people in the room. someone _______in the room 填be动词 used to be the living room翻译 HE MAY BE IN THE ROOM还是HE MAY IN THE ROOM?BE必须有吗? there must be someone in the room _(be)there This room requires Camfrog Pro to open video.怎么回事? This room requires Camfrog Pro to chat.用camfrog聊天为什么显示：this room requires camfrog pro to chat The constant rise of meat price requires that effective measure____ by the government.A must be taken B be taken C will be taken D should take the matter requires ___.a.to think over b.to be thought overc.being thinking over d.being thought over the matter requires ( )Ato think over B to be thought over C being think over Dbeing thought over We were led through the main room to a smaller room,one I knew to be the event room. 英语翻译Kicked:You were disconnected from the room because this room requires a webcam.If you have a webcam try joining again or visit our help area.(by Camfrog Server) 英语翻译when determining what the law requires. There will be only stading room on the earth翻译 She must be in the room.的意思