Ответ:

Ex.4

1) When I phoned my friends, they were playing monopoly.

2) The kids were playing in the garden when it suddenly began to rain.

3) I was practising the guitar when he came home.

Ex.5

1) Next month my friend and I will travel together around Europe.

2)The athletes soon will return from the competition.

3) Her parents think Alice will become a teacher one day.

4) They have bought new sports shoes. They are going to start running next week.

5) I am going to meet the editor at 10 o`clock tomorrow.