се 1 he - (swim) when he _ (see) the shark. 2 they _ (meet) while they — (walk) near the river. 3 peter — (have) an accident while he — (ski 41 - (not wear) a cycle helmet when i - (fall off) my bike. 5 they —(not sleep) when we — (phone) them.

1 - He was swimming when he saw the shark.

2 - They were meeting while they walked near the river.

3 - Peter was having an accident while he skied.

4 - I wasn't wearing a cycle helmet when I

fell off my bike.

5 - They weren't sleep when we phoned

them.

Объяснение:

In a monarchy, a king or queen is head of state. the british monarchy is known as a constitutional monarchy. this means that, while the sovereign is head of state, the ability to make and pass legislation resides with an elected parliament. although the sovereign no longer has a political or executive role, he or she continues to play an important part in the life of the nation. as head of state, the monarch undertakes constitutional and representational duties which have developed over one thousand years of history. in addition to these state duties, the monarch has a less formal role as 'head of nation'. the sovereign acts as a focus for national identity, unity and pride; gives a sense of stability and continuity; officially recognises success and excellence; and supports the ideal of voluntary service. in all these roles the sovereign is supported by members of their immediate family.

The problem of ecology is very controversial nowadays. There are a lot of different problems that people should solve together: pollution of air, rivers and ocean, deforestation and, of course, one of the most important problem today. It's global warming!  
I am sure, everyone can help to save the environment and nature. Firstly, we should not litter on the streets, throw thing into the water and save the water!
We should not fire in the forests because it is usually the cause of forest fires.
We always must remember about our natute and help it all the methods we can!

100 words!