How are we to develop new technology if we can’t study current technology to figure out how to______it?

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How are we to develop new technology if we can’t study current technology to figure out how to______it?

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Movies are（）entertainment. They teach us how to do things, how to be.

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--- We are going to have an oral English test.--- _________________

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To learn how to let go is not an easy lesson to learn, _____ when we are young and think that the world is ours to command, that whatever we desire with the full force of our passionate being can, nay, will, be ours.

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Although we are keen on meeting your requirements, we regret that we are unable to _____ your request to reduce the prices as our prices are closely calculated.

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