把下列句子改为被动语态,没空一词 1.we should ask Tom to clean his room again
Tom____ ____ ____to clean his room again2.we need to water the flowersthe flowers ___ ____ ____ watered by us3.they should finish mending the machine in three daysthe machine ____ _____ ____mending in three days4.we can use this room to store some old thingsthis room ___ _____ ______ to store some old things5.a lot of people in china can speak english nowenglish ___ ___ ___ by a lot of people in china now