Кому не трудно, очень много задали на дом) 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?