2. complete the text with the words in the box.
eruption, inform, volcanic, damage, volcano (x3), cause
the airport in quito was closed yesterday because of the damage that ash could to flights.
the ash thrown up by the guagua pichincha could also cause serious to agriculture. it might
make breathing difficult for people and animals. at one moment, it lcoked as if the might erupt
slowly. this slow could last for months or even years. the mayor of quito said “we must learn
to live next to this . what else can we do? there is a 10 per cent chance that it will be a long
calm eruption. people should wear special masks when they go outside. we will continue to keep
an eye on the situation, and we will the public of any other measures they should take. ! ​

Days add up to weeks, weeks to months, and months to years. Without a calendar, it would be difficult to determine which day or month it is. It consistently lists the days of the week and months for the whole year.
The word “calendar” translated from Latin means literally the following: “loan entry”, “debt book”. The fact is that in ancient Rome, debtors paid debts or interest on them in the days of calends - in the first days of the month. Hence the name. But the Greeks cale was not. Therefore, the Romans said ironically about hard-core defaulters that they would return the debt to the Greek calends, that is, it is not known when. This expression has become popular in many languages ​​of the world. Well, the modern 12-month calendar appeared thanks to the Roman emperor Guy Julius Caesar. Prior to this, there was a calendar of 10 months running. In the four-year cycle, three years have 365 days, and the fourth, 366 days. Thus, it was possible to achieve the correspondence of the calendar of the time of the Earth’s revolution around the Sun.
In Slavic languages, Monday has the meaning of the first day or, according to one version, the day after the week, since “Week” is the old Russian word for modern Sunday. In Hindi, Monday is the Day of the Moon.
In Slavic languages, this day is clearly read as an ordinal numeral, that is, it is the “second” day of the week. In Hindi, Tuesday is Mars Day.
In the Slavic "environment", "middle", etc. The ancient Russian name of the medium "tretnik" is rarely found. Note that astrologically, Mercury is considered to be an average, asexual planet - neither male nor female. In Hindi Wednesday - Mercury Day.
In Slavic languages, Thursday, like Tuesday, is a purely numerical value of the fourth day. In Hindi, Thursday is Jupiter's Day. They have a direct connection with the ancient thunder god Thor, the counterpart of Jupiter.
Friday has a parallel with the Norse goddess of fertility and love Freya (Frigga), an analogue of the Greek Aphrodite and Roman Venus. In Slavic languages, this day is within the meaning of the "fifth". In Hindi, Friday is Venus Day.
The Russian name "Saturday" goes back to the Hebrew "Shabbat", meaning "peace, rest." In this sense, one of the astrological meanings of Saturn - motionlessness, concentration, successfully echoes Shabbat. Interestingly, the Slavic languages, for no reason at all, are unanimous with the Latin, their Sabbath means "the day of ablution", from where we learn that the ancients washed themselves once a week. In Hindi, Saturday is Saturn Day.
Sunday is the Day of the Sun in Latin, English and German, in many languages ​​this day is indicated by various variations of the word "Sun / Son" (Sun). The Russian "Sunday" appeared in the same way, replacing the old name for this day, "Week", successfully preserved in other Slavic languages ​​- Week (bol.), Nedilya (ukr.), And others. In Hindi, Sunday is the Day of the Sun.
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1. The pupils ( discussed) this problem yesterday. 2. The pupils (were discussing) this problem the whole evening yesterday. 3. They  (were discussing) this problem from three till five o'clock. 4. They (were discussing) this problem at four o'clock yesterday. 5. They (were discussing) this problem when I came in. 6. She ( learnt) a poem yesterday. 7. She (was learning) a poem at five o'clock yesterday. 8. She (was learning) a poem from five till six o'clock 9. She (was learning) a poem when mother opened the door. 10. She (was learning) a poem the whole day yesterday. 11. I (did not to see) him yesterday. I ( saw) him two days ago. 12. She (was not  writing) a at seven o'clock yesterday. She (wrote) two days ago. 13. Jane (was reading) the magazine from five till six o'clock last evening. 14. He  studied) a rule in the morning last Monday. 15. Last month our team ( lost) the game. 16. what was she ( doing) when the telephone rang? 17. Whom were they ( speaking) to when I met them at the station? 18. They (were having) lunch when the telephone rang 19. Nick (was making) a report at three o'clock yesterday. 20. Mike (was writing) on the blackboard when I came into the classroom. 21. She (was not  sleeping) the whole night yesterday. 22. Who entered the room when you (were watching) television? 23. What were you ( thinking) about when I asked you a question?