Przykładowe rozwiązanie:

1. It was informed that in 2017 in Europe there had been two experts on this disease.

2. It is believed that repair work on the facilities destroyed by the tsunami will be very costly/expensive.

3. It is assumed that the speed of communication will be still increasing.

4. I want it to be clear that I'm not taking part in the conference.

5. I know you don't like performing in front of an audience, so you can leave it to me.

6. It is said that globalisation causes the same amount of poverty as it eliminates.