Question

17. My father (teach)  me to drive when I was young.

18. Dave (try)  to make a fire but there was no wood.

19. The little boy (spend)  hours in his room making his toys.

20. The telephone (ring)  several times and then stopped before I could answer it.

Answer 1

17. My father (teach) was teaching me to drive when I was young.

18. Dave (try) tried to make a fire but there was no wood.

19. The little boy (spend) spent hours in his room making his toys.

20. The telephone (ring) rang several times and then stopped before I could answer it.

Answer 2

17.was teaching

18.tried

19.spent

20.rang