Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
Sometimes the tides are very high and this can be a big problem for the towns near the cost. 1_______. London has a special mechanical ‘wall’ to stop the tide coming into the city.
There are big differences between ‘high tide’ and ‘low tide’ in Britain. In some places, the sea goes out a very long way. 2_______. As the tide comes in and goes out, it cleans the beaches.
In the ports, the ships wait for the high tide. 3______.
The tides can also help to make electricity.
4_______.