Question

A note was on the blackboard ______ “All those who have a fever must leave school right now”

1. A.
   on which was written
2. B.
   said
3. C.
   read
4. D.
   Reading

Answer 1

D
 D。考查非谓语动词作定语。表示“在……上面写着……”，可以用saying, reading, which said, which read或on which were written，因此只能选D。