Mother languages, along with linguistic diversity, matter for the identity of individuals. As sources of creativity and vehicles for cultural expression, they are also important for the health of societies. Not least, languages are factors for development and growth. We know how important education in the mother language is for learning outcomes. Mother language instruction is a powerful way to fight discrimination and reach out to marginalized population. As wellsprings of knowledge, languages are also starting points for greater sustainability in development, for managing more harmoniously our relationship with the environment and change.

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Churchill believed that he was（1）to lead his country. He fought as a soldier in World War I and led the country to victory in World War II. It seems ironic that a leader of such（2）as Churchill could not count on the（3）of voters in 1945. However, in a（4）country, electors cannot be（5）, and he had to tolerate political defeat after military victory, and once more to his country retreat, Chartwell.

Some old people don’t like pop songs because they can’t tolerate so much noise.

He raised his eyebrows and stuck his head forward and（ ）it in a single nod, a gesture boys used then for O.K. when they were pleased.

Now scientists cannot realize （ ）soon that existing scientific knowledge is not nearly so complete, certain and unalterable as many textbooks seem to imply.

Perfectly matched pearls, strung into a necklace, bring a far higher price than the same pearls sold ______.