The ninth planet of the solar system was 1) discovered not long ago. It happened in 1930. Scientists had been hunting for the planet for a 2) long time. They had calculated its probable position but there was no proof that the planet really 6) existed. It was too 8) far away for the telescopes of that time to find it. It’s worth mentioning that the first photos of the planet were taken by a very young researcher. He was only twenty-four and had no formal education in astronomy. However, he was deeply involved in the search for the ninth planet. The planet at the edge of the 5) solar system was called Pluto, after the Roman god. The name for the planet was 7) suggested by an 11-year-old British girl.
13 - 1)
14 - 2)
15 - 6)
16 - 8)
17 - 5)
18 - 7)
Лишнее: 3), 4).
2. Where will he go this summer ?
3. What did parents always advise you to do?
4. What did she make for herself last week?
5. Who knows this great poem by heart?
6. How many grammar exercises did the students do at every lesson?
7. What do these road signs indicate ?
8. Why won't he help his group-mates with their course papers?
9. When does granny cook pasta ?