Прочитайте текст. Заполните пропуски в предложениях под номерами В4-В11 соответствующими формами слов, напечатанных заглавными буквами справа от каждого предложения. TEST 20 (part 1)

B4

Have you heard of penicillin? It's a type of medicine that ………………… bacteria. Bacteria can cause infections.

KILL

B5

Before antibiotics …………………, infections were a very serious problem.

DISCOVER

B6

Many people ………………… in the past because of them.

DIE

B7

A doctor from Scotland called Alexander Fleming discovered antibiotics. Fleming ………………… medicine at St Mary'sHospital in London.

STUDY

B8

During the First World War, he worked in a hospital in France, ………………… the soldiers who had been hurt.

HELP

B9

After the war, he ………………… an important discovery. He discovered a way to kill bacteria.

MAKE

B10 

At the time, however, other doctors ………………… how important Fleming's discovery was. Because of this, he stopped doing his experiments.

UNDERSTAND

B11

It ………………… several years for scientists to realise that Fleming had found a way to save millions of lives.

TAKE