请帮忙把下列句子变为被动语态形式 谢谢...

1。The little girl is always taken care of by Li Ming when her parents are away from home。2。The book will have been finished by us by end of next week。 3。A new teaching building is being built by them in front of the playground。 4。My supper had already been cooked by my mother,before I returned。5。I heard some commonplace remarks was made by her to her husband when she left the house。