Some people are trying to ……. a way to build cities under the seas.

Did Edison……. the telephone, or was it someone else?

Maybe one day they will find a ………. for every disease – but perhaps not!

Some jobs can’t be done by a ………- they have to be done by people.

I think the lift was a very important……… It changed buildings completely.

Today we did an ………. with electricity.

What do you think is the most important scientific ……. Of all time?

Our school has got a ………..., where we have our science classes.

Galileo best ……… was to show that the Earth moves around the sun, and not the sun around the Earth.