问题补充：
You didn come to school yesterday.Why?要用英语来回答哦哦!
答案：
Because My mother was sick ,I had to take care of her.I couldn,t leave her,I wish my mother will be better 可以吗
======以下答案可供参考======
供参考答案1:
because my grandmother was ill ，i had to look after her
