my mother( ) boiled an egg yesterday 括号那用加was么?为什么?

my mother( ) boiled an egg yesterday 括号那用加was么?为什么? She_____(have)just boiled an egg. a boiled egg = a egg that was boiled 以及 a deserted car park My mother was cook yesterday evening. she____already boiled an egg.she ___boiled an egg a minute a she ___already boiled an egg .she ___boiled an egg a minute a hard-boiled egg. my mother was in the kitchen 为什么要加一个was? my favourite food is eggs .为什么egg加s了? he was happy yesterday按照你说的,was后面要加名词,那happy是动词啊,为什么要用was呢. 用括号内所给动词的适当形式填空My mother did some_____(read)yesterday. Yesterday my mother went shopping()括号里要填什么