Complete the sentences with the correct form of the verb in brackets.
Example: The man came out of his house and ran (run) down the road.
1.The reason he ________ (not go) to the party was because Sam hadn’t invited him.
2.When the plane landed at Heathrow it ________ (rain) as usual.
3.We ________ (walk) for about an hour when we realized we were lost.
4.I _______ (do) my homework when I suddenly heard a loud noise.
5.When I got home, I remembered that I ________
(leave) my keys in the restaurant.
6.He was really angry when she arrived because he
________ (wait) for her for 45 minutes.