It depends on the situation
№5
1. discoveries 2. industrial 3. weight 4. impossible 5. building 6. buildings 7. construction 8. useless. 9 elevator
№6
1. became 2. bigger 3. more 4. were also seen 5 fought. 6 tallest 7. highest 8. was completed 9. finished 10. city’s. 11 hit
I have a great summer holydays.I took many fantastic photos.<span>After my hard and busy school year my summer holidays began. I felt happy and began to plan a lot of wonderful things to do during my summer vacation. </span>
<span>I was dreaming about far South countries I always wanted to visit but I had to go to the Azove seaside with my relatives. The water was very warm there because you know Azove Sea isn’t deep. What I liked there - a lot of different kinds of entertainment there: "water mountains", water scooters and discos. </span>
<span>There was nothing to do all day except lying in the sun and getting a wonderful tan. I was playing with my little sister on the sand and in the waves teaching her to swim. Later I returned to Kherson and spent some time in town going out with my friends, reading, listening to music, watching TV, playing computer games. After that I went to the sports camp where I spent seven days. </span>
а) I had lived in London for a long time before I learnt to speak English fluently.
b) Before we came to this country, we had never travelled by plane.
c) I had finished all my homework before I met my friends.
d) When my friend called, I had just had my breakfast.
e) We had studied hard before we took the test.