2 Choose the correct
words. Write the answers
in your notebook.
CX
Inventions and discoveries
• The first electric guitar 'is / was designed
in the USA in 1931. Now, most pop and rock music
is ?make / made with electric guitars.
• Camera phones aren't / weren't produced until
2000. Now, about 100 million selfies are 'took /
taken every day!
• Gravity swas/ were discovered by the English
mathematician Isaac Newton. He bis / was hit
by a falling apple, and started thinking about
why that happened.
