Resposta:
a) I was reading a very pleasant book last night. (to read)
b) He were watching TV when his mother arrived. (to watch)
c) My father and my little brother were playing soccer yesterday. (to play)
d) My mother was having lunch with her friends last week. (to have)
e) They was working hard in their College project. (to work)
Explicação:
Past continuous será sempre:
sujeito + verbo to be no passdo (was para o singular e were se plural ) + verbo seguido de ing
OBS.
My father and my little brother = they --> were playing
