Last night, there were millions of people ________the opening ceremony live on TV.
A．watch
B．to watch
C．watched
D．watching

参考答案：D 答案解析： 主句是there were millions of people，选择的是非谓语的正确形式，句意应该是“昨晚，成千上万的人们在电视上观看开幕仪式直播。”，people与watch存在逻辑上的主动关系，因此应该用现在分词形式，故选择D。