Надо test 14. past simple or present perfect? 1.it(not snow) this week 2.(see) the news on television 3.mike(leave) school in 1999 4.i dont know where my brother is. you(see) him? 5.where is your key? i dont know. i(lose) it 6.we (visit) the local museum the other day 7.ann is on holiday. she (go) to france 8.when the last train (leave) 9.would you like something to eat? no, thanks. i just (have) lunch 10.the weather (be) good when you (be) on holiday? 11.we (not see) each other for a long time 12.its the most interesting book i ever (read) 13.he (drink) too much coffee today 14.what you (do) at the weekend? 15.john is hungry. he (not eat) anything since breakfast

1. it hasn't snowed this week.2. you saw the news on television last night.3. mike left school in 1999.4. i don't know where my brother is. have you seen him? 5. where is your key? i don't know. i have lost it.6. we visited the local museum the other day.7. ann is on holiday. she's gone to france.8. when did the last train leave? 9. would you like something to eat? no, thanks. i've just had lunch.10. was the weather good when you were on holiday? 11. we haven't seen each other for a long time.12. it's the most interesting book i have ever read.13. he hasn't drunk too much coffee today.14. what did you do at the weekend? 15. john is hungry. he hasn't eaten anything since breakfast.

mary used to eat junk food when she was a child but now she keeps fit and prefers healthy food.

10 years ago people used to pay only in cash, but today most people have credit cards.

seven years ago i used to have a motorbike, but now it belongs to my sister as i drive a car.

when he lived in paris, he used to eat frogs every weekend, but now he lives in india and he eats indian food every second day.

when her granddaughter was a kid she used to believe that snow was made of ice cream.

1) мы знаем, что он работает над проблемами в области космической связи.(его работа связана с проблемами).

2) если вы сделаете даже малейшую ошибку в компьютерном языке, разговор ломается и вы должны идти в начало.( наверное, имеется ввиду, ошибка в алгоритме, программа рушится и надо начинать сначала? )

3) читальный зал библиотеки конгресса - это огромная коллекция справочников.