Use simple past or present perfect: ) de-icing aircraft? (go) to the meeting last night? 3.) to seattle. 4.this year ) to athens 3 times so far. 5.paul and ) working for swiss since 1998. (finish) you flightplan yet? 7.last night my flight ) by. ) us that this summer they are going to buy a new twin-engined aircraft. 8.) many different countries so far. last summer ) to italy and 3 years ago ) in spain. /visit) germany yet. 9.) to work in switzerland? 10.) in 2007. (watch) the film about the new dreamliner? 12.) the gate 13.how ) about the new english icao level 4 exams? 14.) in 2009, so ) about it for 4 years. 15.) at skyguide last night? (read) "if clouds could talk" when you were on holidays?

1) 2) 3) 4)flew 5)have been 6) 7) 8)'t visited 9) 10)came 11) 12) 13) 14) known 15)happened 16)

1. has helen ever tried deicing aircraft? 2. did you go to the meeting last night? 3. i have never been to seattle. 4. this year i have flown to athens 3 times so far. 5. paul and judith have been working for swiss since 1998. 6. have you finished your flightplan yet? 7.  last night my flight instructor came by. she told us that this summer they are going to buy a new twin-engined aircraft.8.  i have visited many different countries so far. last summer i went to italy and 3 years ago i was  in spain. i haven't visited germany yet.9. when have you come to work in switzerland? 10. i came in 2007.11. have you watched the film about the new dreamliner? 12. they have already left the gate.13. how long have you known about the new english icao level 4 exams? 14. i knew in 2009, so i have known about it for 4 years.15. what happened at skyquide last night? 16. have you read if clouds could talk when you were on holidays?

studing at school is very hard. children have to get up early to be at school in time. we spend half a day at school and then we go home. at home we should do our homework.but in school are many good things. at school we get new knowledges, make friends. sсhool prepares us for adult life.