Read and complete. use is/are, was/were, wasn't/weren't 1.) it yesterday and they home 2.) kim her grandmother's yesterday. 3.) she home 4.) mum and dad at work yesterday. 5.) they in the village.

1) was, were

2) was

3) is

4) were

5) are

Во всех позициях грамматически можно использовать и отрицательную форму. 

1.) It (was) Sunday yesterday and they (were) at home.

возможен и этот вариант:

 It (was) Sunday yesterday and they (weren't) at home. 
2.) Kim (was) at her grandmother's yesterday.

возможно:

  Kim (wasn't) at her grandmother's yesterday. 
3.) She (is) at home. 
4.) Mum and Dad (were) at work yesterday.
 возможен и этот вариант:

 Mum and Dad (weren't) at work yesterday. 
5.) They (are) in the village.