keep diaries还是keep diary

keep diaries还是keep diary keep diaries /keep a diary' 哪个对? I( )when Iwas a middle school student,now I write a blog every day instead.A.was used to keep diaries B.used to keep diaries C.was used to keeping diarieds D.am used to keeping diaries It's helpful for you to keep a ( )every day.A.dairy B.daily C.diary D.diaries keep silent还是keep silence keep health还是keep healthy keep happily 还是keep happy keep keep keep keep keep keep keep Keep keep keep keep