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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1．他学会了用手语与失聪的顾客交谈。(communicate)

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8．He is a difficult man________.

A．to deal with　 B．to be dealt with　 C．to do with　 D．to be done with

解析：句意：“他是一个很难应付的人。”用动词不定式作定语，是动宾关系，用主动式，故答案是A。

答案：A