the meeting room,he found all the parents already there.
A. To enter; sitting
B. Stepping into;to seat
C. Entered; seat
D. Entering;seated
网友回答
A. To enter; sitting
B. Stepping into;to seat
C. Entered; seat
(答案→)D. Entering;seated
解析： 考查非谓语动词的用法。enter的逻辑主语是句子的主语he,而且该动作发生与found同时发生。seated 为过去分词,作宾语补足语。