What is he doing?
He's shaking his head
What is she doing?
She's brushing her hair
What are they doing?
They're shaking hands
What is she doing?
She's biting her nails
What is she doing?
She's shruging / shruging her shoulders
What is she doing?
She's blowing her nose
What is she doing?
She's folding her arms
What is he doing?
He's combing his hair
What is the baby doing?
The baby is sucking his/her thumb
What is she doing?
She's touching her toes
What is he doing?
He is raising his eyebrow / one eyebrow
What are they doing?
They're holding hands