my sister __(丢失) her key to her bitke on her way to the shopping center.用什么时态?为什么?

my sister __(丢失) her key to her bitke on her way to the shopping center.用什么时态?为什么? she is my sister but i am not her sister ,i am her __ my sister worries about her chinese test改为同义句My sister__ __ __ her chinese test she takes care of her sister.同义句her sister __ __ ___ __by __ 我想在我妹妹5岁生日时给她买个影集.I want __ __ my sister a __ on her __ birthday. 这个是首歌的歌词,歌的名字是什么?she is my sister but i am not her sister ,i am her __ My sister makes the bed __ every morning.A hers B her C she D herself 选那个?为什么? My sister left the office after she finished her work(改为同义句）My sister___leave the office __ she finished her work My sister is a singer.__ your sister ___? My sister __ __(读英语) every day my sister likes history （对my sister提问）__ __ history? My sister likes Beijing to her trip Her sister is my c______ friend. My sister can't__(find)her book I have more books than her.同义Her books ___ ___ than mine.第二题..My sister is quieter than me.的同义句是什么?I’m __ __than my sister. 1.Are those pencils yellow = Are those __ __ 2.Mary and her sister look the same .=Mary　__　__　 her sister． Her sister is twelve.So is my sister（合并）Her sister is ____ ____ ____ ____my sister Everyone in the class __ __ __ their teachers now.My sister ill.I__ __look after her in hospital.A.hurry up B.have to C.listen to注意时态 和 词性变化.