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Ответ:

Ex. 6

Объяснение:

2. a

Penicillin was discovered by Sir Alexander Fleming.

3. g

Rockets will be used by people to travel in space.

4. h

Buildings are designed by architects.

5. f

Thousands of people were entertained by Charlie Chaplin.

6. e

Chips can be fried in a frying pan.

7. d

Endangered species must be saved by us.

8. b

Eggs are laid by hens.