Complete the sentences.Use contractions where possible

1. Tim and Carol (were) late yesterday.
2. When he (arrived), we (were having) dinner.
3. While they (were playing) tennis, we (took) our dog for a walk.
4. When I (got) up, he (was sitting) in the garden and (reading) a book.
5. I have (never been) to India.
6. I'm not sure if we (shall visit) her tomorrow.
7. No, I don't want to eat anything because I have (just had) lunch.
8. She (slept) well last night.
9. Look! Susan (is swimming) in the pool.
10. When he (was walking) down the street, he (saw) Jill.
11. She always (takes) a shower in the morning.
12. After we (had taken) some photos of the cathedral, we (went) to the next restaurant to have dinner.
13. They (met) my brother an hour ago.
14. This is the most beautiful painting I have (ever seen).
15. They (told) us that it (would rain) the next day.

Newton belongs to the hypothesis that light - a stream of material particles, corpuscles, moving from the light sourceF high speed, which is the speed of light. By studying the nature oflight and color, Newton came to the conclusion that the constant color natural bodies are caused by the fact that some of the bodies reflect some sort of rays, and other body - other varieties abundant than ostalnye3. Colored powders, as noted by Newton, suppress and hold a very large part of the world, which they are covered. And they are colored, reflecting the most abundant light their own okraski4. Newton drew an analogy between the color andU sound, considering that both of these phenomena have a similar nature,Optics: An Introduction to optics. Electromagnetic nature of light. Photometry. / Barsenov DG, Granovsky VG, Grekov AA, VE Jurkiewicz - M .:ЦНТДИСИ  at РГПИ , 1992. -30 p.Newton I. Optics or a treatise on reflection, refraction, bending of light and colors. - M .: State Publishing House technical and theoretical literature, 1954. -367. См. там же: с 134.См. там же: с. . 113.127than probably anticipated the discovery of the electromagnetic nature of sound and light. "Like the sound of a bell or a musical string, or other sounding body is none other than the oscillating movement in the air and nothing but spreads on the subject of how this movement, causing a feeling of feelings in such a movement in the form of sound; the same subject matter and painting is nothing more than a predisposition to reflect one or another sort of rays more strongly than the rest; in the rays themselves do not have anything other than a disposition or otherwise distribute the movement of feelings, in the latter there is the feeling of motion in the form of flowers. " This finding gave Newton bases color, which converts the light of day, while passing through the lens, in a circle or color wheel. Seven parts of the circumference DE, EF, FG, GA, AB, BC, CD have been proportional to the seven musical tones and intervals of eight sounds: sol, la, fa, sol, la, mi, fa, sol contained in an octave.