Complete the crossword.
1 Some people are trying to _____ a way to build cities under the sea.
2 Did Edison _____ the telephone, or was it someone else?
3 Maybe one day they'll find a _____ for every disease – but perhaps not!
4 Some jobs can't be done by a _____ – they have to be done by people.
5 I think the lift was a very important _____ . It changed buildings completely.
6 Today we did an _____ with electricity.
7 What do you think is the most important scientific _____ of all time?
8 Our school's got a _____ , where we have our science class.
