The box:
technological warn revolution expertise evidence genuine

Complete the sentences using the correct form the box above:
1.A teenager emailed a.............to the government about the dangers of an approaching comet.
2.I'm not very good with using..................manuals,I'm afraid gadgets unnerve me!
3.He's a real................ on astronomy -there's nothing he doesn't know about the stars.
4.When the mouse mat was first introduced,it was regarded as a.................new idea.
5.I was .....................surprised by the success of the project.
P.S:Imi cer scue pt. eventualele greseli,m-am grabit.