Question

The teacher asked more ________ to prevent the students’ eyes from _______.

1. A.
   to do; injuring
2. B.
   done; injuring
3. C.
   to be done; being injured
4. D.
   being done; being injured

Answer 1

C
考查非謂語動詞的被動式。ask sth. to be done是“要求某事被做”的意思，more與do的關系是被動的；prevent sb./sth. from being done阻止……被做；eye與injure的關系也是被動的。