4. Choose the correct variant: 1). It when she looked out of the window.
a/snowed b/snowing c/ was snowing
2). While my mum was watching TV I my homework.
a/did b/doing c/was doing
3). I was reading I heard a strange noise.
a/when b/while c/and
4). Last year we at a nice hotel in Mexico.
a/ stayed b/were staying c/ staying
5). we were playing in the garden my sister was sleeping.
a/as b/when c/where