Помогите понять что тут нужно сделать?Make questions and negatives from the following positive sentences

Your hands are very dirty.
My sister is a doctor.
This garden is big.
The weather is nice today.
Your books are in your bag.
I am happy.

создать вопросы и отрицательные предложения из утвердительных. например l am happy. Am I happy? I'm not happy.