The subject was so（） that Tom became very（） in it.

单选题

The subject was so（） that Tom became very（） in it.

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单选题

Although the report was interesting and informative, much of the material was not _____ to the subject assigned.

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单选题

When he suddenly（） up the subject of genetic engineering, there was an embarrassed silence.

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单选题

（ ）The stone was so heavy that it was difficult for the old man to______it.

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填空题

She was so unhappy that she was（ ）the verge of committing suicide.on

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