1. I needn't have called Andy. My sister had called him before me.
2. You could have told me that we were not going to school on Monday.
3. Alice shouldn't have drunk cold milk.
4. Kim should have typed the letter. Her handwriting is no good at all.
5. Michael needn't be asked about it. He knows the answer to this question.
6. You could have taken part in the competition. Why didn't you come?
7. Caroline, you should have washed the dishes.
8. We needn't look for grandma glasses. She has already found them.
9. Jack needn't have gone to the shops. The house is full of food.
10. They should have painted the walls yellow. Mrs. Adams likes this color.
2)Texas - c)bordes on Mexico in the south like Arizona and New Mexico
3)The Colorado - g)flows south
4)Washington - f)is a state in the north-west
5)Washington D.C - d)is the capital of the USA.
6)Florida - h)lies in the south of the USA
7)The Appalachians - e)stretch along the coast
8)The Rocky Mountains - a)Stretch in the east.