Question

Complete the sentences with the correct form of a verb from the list.
Underline the stress in the verbs and also in the bold words.

develop / discover / do(x3) / invent / make / prove / volunteer

1) Pierre and Marie Curie ..... radium (жирный шрифт) in the early 1900s.

2) Scientists usually ..... experiments(жирный шрифт) in a laboratory(жирный шрифт).

3) Archimedes ..... an important discovery(жирный шрифт) in his bath.

4) Isaac Newton's experiments ..... his theory(жирный шрифт) that gravity existed.

5) The telephone was ..... in the 1870s.

6) Pharmaceutical(жирный шрифт) companies try to ....... new drugs to cure illnesses and diseases

7) Scientists have to ...... a lot of research(жирный шрифт) into the possible side effects(жирный шрифт) of new drugs.

8) Before a company can sell a new drug, they have to ..... tests and trials(жирный шрифт) to make sure it is safe.

9) People can ...... to be guinea pigs(жирный шрифт) in clinical trials.

Answer 1

Pierre and Marie Curie discovered radium in the early 1900s.
Scientists usually do experiments in a laboratory.
Archimedes made an important discovery in his bath.
Isaac Newton's experiments proved his theory that gravity existed.
The telephone was invented in the 1870s.
Pharmaceutical companies try to develop new drugs to cure illnesses and diseases.
Scientists have to do a lot of research into the possible side effects of new drugs.
Before a company can sell a new drug, they have to do tests and trials to make sure it is safe.
People can volunteer to be guinea pigs in clinical trials.