Modern natural hazard (warn) system save thousands of lives. When people (inform) about the approaching disaster in advance, they can stay inside for their (safe) or flee to the (evacuate) centres. Timely (predict) of natural disasters can reduce not only the human (lose) but also the economic ones. People can prevent damages by (seal) up the windows and the doors. They can also park their cars in a garage or any other (cover) areas in order to protect them.​

ben is very beautiful student.he get only good marks,but he very lazy.on a day he have four or five lessons.at school he have many friends.his dear lessons is math,art and english.

1.the solar sail will destroy the asteroid.

the solar sail won't destroy the asteroid.

will the solar sail  destroy the asteroid?

2.we'll be able to have holidays in space soon.

we won't  be able to have holidays in space soon.

will we  be able to have holidays in space soon?

3.they're going to send a manned spaceship to mars.

they aren't going to send a manned spaceship to mars.

are they going to send a manned spaceship to mars?

4.mark is going to be an astronomer.

mark isn't going to be an astronomer.

is mark going to be an astronomer?

5.you'll have to wear a spacesuit.

you won't have to wear a spacesuit.

will you have to wear a spacesuit?

i think friendship is a feeling which can last forever. i am friends with a boy who lives next door. his name is daniel. in general he is very shy and brainy. i think daniel will never betray me. i make friends with daniel because we talk our problems through. besides, we have a good laugh together and have similar interests. we both like english and maths. as a friend he is loyal. we play computer games, go on a picnic together, ride a bike, play football and swim in the river. daniel is my best friend.

1.  the article having been read we knew the subject much better. b)  так как статья была прочитана; 2.  having stopped the computer he left the shop. d)  остановив компьютер.

3. the operating machine was installed in the shop. a)  работающая машина; 4.  having installed the new computer we obtained the results of the calculations quicker.

a)  установив новый компьютер;