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.
Помогите пожалуйста!

Большое спасибо!

Are your hands dirty?your hands arent dirty.is your sister a doctor?My sister isnt a doctorIs this garden big? This garden is not bigis the weather nice today?The weater isnt nice todayAre your books in your bag? your books arent in your bagAre you happy?I am not happy