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Charles Darwin first described his theories of __________ in detail in his work entitled “The Origin of Species by Means of Natural Selection ”

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The Litter-Robot addresses one of the downsides of owning a cat: cleaning its litter box. The device sifts through kitty litter, removing clumps automatically and storing them in a bag.

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A 20 percent increase in revenuemakes this the ------- year yet for the Sorvine Hotel Group

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Don’t you wish you ___________ a skiing holiday on Mont Blanc for your mid-term break next winter?

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She refused to ______ the traditional woman’s role

Unlike most men, my uncle likes _______very much. I like his eel soup very much.

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They've ____________ the kitchen by building over part of the garden

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Since the new teacher failed to ____________ herself with the students, she found it hard to maintain an orderly classroom

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Gina: “We are buying Jim a birthday present.”

Cecilia: “_______”

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Dictionaries frequently explain the origin of the defined word, state its part of speech, and indication its correct use.

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Men and women in the Peace Corps work with people in the developing countries to help them improving their living conditions.

I’ll never forget the time when I ______you at my boyfriend’s house last year.

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I never liked mushrooms before, but you really ___________ my mind with this dish

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I can't believe you would even consider _____________ on your family when they need you the most

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The study of consumer behavior will be repeated in order to ensure the ------- of the results

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"Would you like to come to my birthday party, Lan?" asked Huy.

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In the past, the trip _______ very rough and often dangerous, but things _______ a great deal in the last hundred and fifty years.

I like doing _______such as cooking, washing and cleaning the house.

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Jane goes to a ____ school so she only sees her family at the weekend

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They have carried out exhausting research into the effects of smartphones on schoolchildren’s behaviour and their academic performance.

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They had discussion about training not only the new employees but also giving them some challenges.