【题目】A great number of students said they were forced to practise the piano.
A.to question
B.to be questioned
C.questioned
D.questioning

【答案】C
【解析】考查过去分词作定语。句意：许多被提问的学生都说他们被强迫练习钢琴。这里students与question之间是被动关系，用过去分词作定语来修饰students，故选C。