Turn the following sentence into English and write your sentence on the answer sheet.
当他被叫到前面演讲时，他紧张得嘴唇都白了。
【正确答案】：
HIS LIP WERE WHITE WITH NERVOUSNESS WHEN HE WAS CALLED TO THE FRONT TO START HIS SPEECH.
【题目解析】：
本题考查常见名词的使用。
演讲：speech；嘴唇：lip；紧张：nervousness。
句子结构：“当他被叫到前面演讲时”可译为when引导的时间状语从句，主句为“他紧张得嘴唇都白了”。