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Can you tell me the process ___________ making reinforced concrete?

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In 1778, he ……………… to London to study with Benjamin West for four years.

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__________it was so cold, he went out without an overcoat.

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The facsimile machine was created __________ Alexander Bain in 1843.

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Each fiber in the bundle ___________ only a tiny fraction of the total image.

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His teacher regrets _______ him that his application for the job has been turned down.

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The ships had their days of ____________ in the 1840s and 1850s.

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Don’t you think my jeans need _______?

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Artificial intelligence (AI) is an area of __________ concerned with making computers copy intelligent human behaviour.

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Space travel is one of the marvels wonders of modern _______.

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The US first __________ of the Moon began with the Ranger 4 impactor in 1962

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................... in Shanghai than in any other city in China.

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Do you know who _________ the ball point pen?

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The meat has to _________ when taking out of the fridge.

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Does the mixture have vanilla in the ____________?