ответ:1.By half past eight they (will not have had) supper yet.
2.The birds (will have flown) away before winter comes.
3.In five years' time we (will have finished) school.
4.By this time next week Jack (will have taken) his exam.
5.I hope it (will have stopped) raining before we have to go.
6.I don't think my parents (will have bought) a computer by the end of the week.
7.George (will not have memorized) al the idioms by Friday.
8.The Rogers (finish) building their new cottage before summer.
9.The party (will not have started) before we get there.
10.He (will not have come) back by supper time.
Объяснение:МОЖНО ЛУЧШИЙ ОТВЕТ
My school is a three-storeyed building.
It is quite big with sport ground behind it, inside swimming pool.
On the groundfloor there are the classrooms for the primary-
school pupils, workshops, library.
There are all kinds of tools and machines in the workshops.
The boys of our school have a woodwork room too.
There is a room for manual works for girls.
Teachers teach them how to cook, sew and design clothes.
Our school library is nice and clean.
Two librarians help pupils to find books they need.
There are many bookcases and bookshelves with a lot of books there.
If you enter the school and turn right you see a big light dining-room.
It is always busy and noisy, but it is clean.
Here pupils and their teachers have their lunch.
There are blue curtains on the windows and beautiful pictures on the walls.
There is a gymnasium on the ground floor as well.
Our physical training lessons are held there.
Pupils like to go there even after the lessons, because it has a lot of sport equipment.
Our school has many classrooms.
The classrooms are light and spacious.
There are three large windows in each classroom with flower pots on the window sills.
Each room has teacher's table, pupils desks, blackboard, tables and charts on the wall, maps and portraits.
There are special classrooms for Chemistry, Physics, Biology,
History, Geography, English, and Russian.
On the third floor there is a big nice assemble hall.
A lot of meetings, concerts, festivals are held there.
Our classroom is on the second floor. Its windows face the school-yard.
Our form-mistress is a teacher of Russian language and literature.
We respect her very much, she is a kind and knowledgeable teacher.
She teaches us Russian and is so fond of her subject, that each of us can not help liking too.
When I think about my school I don't remember its walls and desks; it is my teachers and school-mates who will be always with me.
I am so thankful to our teachers for what they have done for us.
