Congratulations ________your graduation ________Qinghua University.

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You can use my computer ________you operate it properly.

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He promised me ________he arrived in Beijing he would come to see me.

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Stop ________so fast , or soon you'll ________a beggar.

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Although he is considered a great writer, ________.

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A．but his works are not widely read

B．however his works are not widely read

C．his works are not widely read

D．still his works are not widely read.

Mother was worried because little Alice was ill, especially ________father was away in France.

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________ is known to all that great changes have taken place in the city.

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Hopefully, more and more waste land will ________in the west of China in the near future.

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Born and brought up in the countryside , the old man is not at all ________.

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Can you tell the difference ________ right ________ wrong?

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