Complete the sentences with the correct forms of the verbs.
1)when he came home he____ (to read)an interesting story about the animals.

2)Kate entered the classroom when John____ (to stand) at the blackboard.

3)When his mother returned home he___ already (to do) his home exercises.

4)asel liked to listen to pop-music when she ___ (to be) younger.

1)when he came home he was reading an interesting story about the animals.2)Kate entered the classroom when John was standing at the blackboard.3)When his mother returned home he had already done his home exercises.4)asel liked to listen to pop-music when she was younger.