Unit 3 - Lesson 1: 9

9. Read and choose the correct variant.

1) Do you think that life on Mars really...?

A. exists.

2) Give me a good… and I'll agree with your opinion.

B. reason.

3) Alfred Nobel ... dynamite.

A. invented.

4) Do you know who ... penicillin?

D. discovered.

5) When I grow up, I'll become a famous....

C. inventor.

6) Only a century ago people believed that space travel was... .

B. impossible.

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