5. In your notebook, match the texts (1-4) with questions A-F below. Some questions match with more than one text.
Which invention(s) ...
A. was/were lost and then found again?
B. was/were popular for a time but then disappeared?
C. used electricity?
D. was/were designed by an unknown inventor?
E. was/were designed to improve your health?
F. was/were first designed in the 19th century?

