SENTENCE TRANSLATION：
当老师问汤姆时，他不承认考试作弊了，但他的紧张露出了破绽。
【正确答案】：
TOM DIDN'T ADMIT THAT HE HAD CHEATED IN THE EXAM WHEN ASKED BY THE TEACHER, BUT HIS NERVOUSNESS GAVE HIM AWAY.
【题目解析】：
本句中有时间状语从句和表转则的并列句，当时间状语从句和主语和主句的主语一致时，主语和被动语态的be动词可以省略。此处露出破绽可以用give him away 来表示。