Прочитайте текст. Заполните пропуски в предложениях под номерами В11-В16 соответствующими формами слов, напечатанных заглавными буквами справа от каждого предложения. TEST 27 (part 2)

B11

One of the most important ……………………… problems in the world today is the shortage of clean water.

ENVIRONMENT

B12

Industrial pollution has made many sources of water ……………………….

DRINK

B13

Thousands of fish die every year as a result of the illegal ……………………… of waste in rivers by factories all over the world.

DUMP

B14

Lake Baikal is one of the world’s largest and most beautiful lakes. It contains a rich ……………………… of fish and plants.

VARY

B15

However, they are being killed by the massive industrial waste, which some factories still pour into the lake every day. A few years ago people thought that the supply of clean water was ……………………….

LIMIT

B16

Now clean water is scarce, and water ……………………… has become a vital necessity for all people.

PROTECT