1.

b) were at home

c) was at work

d) were at school

f) Were Yanis and Emma

   weren't at school

g) Was Nick

   wasn't at home

h) Were Liz and Jane

   weren't at the cinema

2.

b) Were you at school on Monday?

c) Was David here yesterday?

d) Was the cinema open on Sunday?

e) Were Kate and Jane late yesterday?

f) Were you in the football team last year?

g) Were all your friends at the party?

h) Was it hot last week?

3.

b) Nick wasn't in my class yesterday.

c) It wasn't warm yesterday.

d) Tina and Jim weren't late.

e) Etty wasn't on the bus.

f) We weren't at the match yesterday.

g) Our teachers weren't pleased with us.

h) I wasn't at the restaurant.

 Bạn chăm học lên nhé ;)