问题补充：
When it was his turn to deliver his speech, ,he walked towards the microphone.
A. nervously and embarrassingly
B. nervous and embarrassedly
C. nervously and embarrassing
D. nervous and embarrassed
答案：
A. nervously and embarrassingly
B. nervous and embarrassedly
C. nervously and embarrassing
(答案→)D. nervous and embarrassed
解析：考查形容词用法：句意：当轮到他发言的时候，很紧张尴尬，他朝麦克风走了过去。形容词nervous and embarrassed对句子的主语he的情况进行解释说明；故D正确。
