1．设集合，，则集合且__________；

5．She gave away state secrets to the enemy.

4．He held up(＝raised)his hand to ask the teacher a question.

3．He ignored the neighbour’s requests that he should make less noise.

2．She was involved in reading all night.

5．她将国家机密泄露给了敌人。(give away)

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答案：1.He learnt how to use sign language to communicate with deaf customers.

4．他举起手问了老师一个问题。(hold up)

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3．他无视邻居们要他别那样吵闹的要求。(request)

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2．她整晚都在专心致志地读书。(involve)

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