He was dancing last weekend.
What was he doing last weekend?
Sam and Andrew were studying this morning.
What were Sam and Andrew doing this morning?
Yes, my mum was cooking pizza yesterday.
Was your mum cooking pizza yesterday?
Answer the question: were you travelling yesterday? (Negative).
No, I wasn't. or No, I was not.
Create the question for the answer: I was reading a book yesterday.
What were you doing yesterday?
Yes, we were eating hamburgers.
Were you eating hamburgers?
Answer the question: was the cat drinking water? (Negative).
No, it wasn't or No, I was not.
She was studying for the quiz on Monday.
What was she doing on Monday?