按要求变换句子
问题描述：
按要求变换句子
1.
1.The cloud comes from .(表示画线部分）（对划线部分提问）
2.He knkws his pen pal's name.(变为否定句）
3.Mr Black is a teacher.(变为一般否定句）
4.I water my flower every day.（把主语改为Amy）
5.My plant is not tall.(变为肯定句,句意不变）
答
1 What does the cloud come from?
2 He does't know his pen pal's name
3 Mr Black isn't a teacher
4 Amy waters her flower every day
5 My plant is short