Ancient Egyptians ___________ build huge pyramids because they were great engineers., COULD  , COULDN'T, In 1900, people ___________ fly in commercial planes because they didn't exist yet., COULD, COULDN'T, Leonardo da Vinci ___________ paint beautiful pictures, but he ___________ take digital photos., COULD, COULDN'T, Before the internet, students ___________ find information in books at the library., COULD, COULDN'T, Christopher Columbus ___________ use a GPS to cross the ocean in 1492., COULD, COULDN'T, Mozart ___________ play the piano when he was only five years old., COULD, COULDN'T, During the Great Depression, many families ___________ buy enough food., COULD, COULDN'T, The Romans ___________ build very strong roads that still exist today., COULD, COULDN'T, Before the light bulb, people ___________ see well at night without candles., COULD, COULDN'T, In the Stone Age, humans ___________ hunt large animals with stone tools., COULD, COULDN'T, Last century, people ___________ send emails; they wrote letters instead., COULD, COULDN'T, Alexander the Great ___________ speak Greek and lead a massive army., COULD, COULDN'T, Because there were no telephones in the 1700s, people ___________ call their friends., COULD, COULDN'T, Astronauts ___________ walk on the moon for the first time in 1969., COULD, COULDN'T, I ___________ finish my history homework yesterday because I lost my notebook., COULD, COULDN'T.

TLS: BASIC 2 - UNIT 6 - COULD - COULDN'T

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