The teacher asked more ________ to prevent the students’ eyes from _______.
A.to do; injuring
B.done; injuring
C.to be done; being injured
D.being done; being injured
网友回答
C解析考查非谓语动词的被动式。ask sth. to be done是“要求某事被做”的意思，more与do的关系是被动的；prevent sb./sth. from being done阻止……被做；eye与injure的关系也是被动的。