571.That is the only way we can imagine ______ the overuse of water in the students' bathrooms.
A.reducing
B.to reduce
C.reduced
D.reduce
572.A great of students _____ said they were forced to practise the piano.
A.to question
B.to be questioned
C.questioned
D.questioning
571.答案是B;此题中we can imagine作定语修饰the only way;而名词way习惯后接to do sth.或of doing sth。
572.答案是C;question与students存在被动关系，此处既表示被动又表示完成，故用过去分词。
