Хелп плиз
1. Underline the correct form.
a. While he took / was taking a bath, Archimedes discovered / was discovering the
principles of density and buoyancy.
b. When Edouard Benedictus, a French scientist, worked / was working in his
laboratory, he dropped / was dropping a glass bottle which had same plastic inside -
and invented / was inventing safety glass.
c. Columbus arrived / was arriving in America while he tried / was trying to reach
the Far East.
d. AIexander FIeming discovered / was discovering penicillin by accident while he
looked / was looking at some old experiments.
e. While Hiram Bingham climbed / was climbing in the mountains of Peru in 1911, he
discovered / was discovering the lost city of Macchu Picchu.
f .While Isaac Newton sat / was sitting under an apple tree, an apple fell / was falling
on his head, and he understood / was understanding gravity.
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g. While Dr Harry Coover tried / was trying to invent a new kind of pIastic, he made
/ was making a very soft substance which stuck / was sticking things together. It was
Superglue.
h. While he observed / was observing the Moon through his teIescope, Galileo
realized / was realizing that it had mountains and craters.

2. Use the prompts to make a question. The answers are in Exercise 1.
a. Where / Edouard Benedictus / work when he invented safety glass?
Where was Edouard Benedictus working when he invented safety glass?
b. Where / Columbus / try to go when he reached America? _______________ ?
c. Where / Isaac Newton / sit according to the story about gravity?__________ ?
d. What / Dr Harry Coover I'hope to invent? ___________________________ ?
e. What Galileo / look at / through his telescope? _______________________ ?