It【isn't】healthy food.Dont eat it please这食物不健康,别吃
They【aren't】my parents.They are Tom's parents他们不是我的父母,他们是tom的父母
I 【am not】Lucy.My name is Lily我不是Lucy,我的名字叫Lily
I【am】going on a picnic with my friend我正在和朋友野餐
It【isn't】healthy food.Dont eat it please这食物不健康,别吃
They【aren't】my parents.They are Tom's parents他们不是我的父母,他们是tom的父母
I 【am not】Lucy.My name is Lily我不是Lucy,我的名字叫Lily
I【am】going on a picnic with my friend我正在和朋友野餐