Someonetookawaythebooksyesterday.

　　　Thebooksweretakenbysomeoneyesterday.

　　2.WwillholdasportsmeetinginSeptember.

　　AsportsmeetingwillbeheldbyusinSepterber.

　　3.Thenursetakescareofthebabieseveryday.

　　Thebabiesaretakencareofbythenurseeveryday.

　　4.Afriendofmineisrepairingthepianonow.

　　Thepianoisbeingrepairedbyafriendofminenow.

　　更上一层楼!/>不明白的再问哟,请及时采纳,多谢!