Хелп 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. 28 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 ? d. what / dr harry coover i'hope to invent? ? e. what galileo / look at / through his telescope? ?