问题补充：
Mr. Zhang is the best music teacher in our school, but he has hurt his left foot and cannot tomorrow’s concert.
A. take part
B. play a part in
C. participate
D. participate in
答案：
A. take part
B. play a part in
C. participate
(答案→)D. participate in
解析：这题考查词组：participate in“参加”take part少了in，play a part in“起着作用。句意是：张老师是学校最好的音乐老师，但他伤了左脚不能参加明天的音乐会。选D。
