How ________ the music he played last night sounded!

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They adopted a new technique, _________ fulfilling the task ahead of time.

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Please ________ exercise one and then continue to do exercise two afterwards.

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________ the Great Wall, everyone considers it to be one of the wonders of the world.

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In doing the job, you have to be ________ careful.

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I ________ a lot of difficulties when I was conducting the experiment.

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What was thought of as impossible in the past has ________ today.

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In one of these rooms was a window ________ into the street, where an old man sat there.

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He always keeps the photo ________ he can see every day, as it always reminds him of his childhood.

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________ better, he stood up and opened his eyes wide.

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