Mr.Smith, of the speed,started to read a novel.
A. tired, boring
B. tiring, bored
C. tired, bored
D. tiring,boring
网友回答
(答案→)A. tired, boring
B. tiring, bored
C. tired, bored
D. tiring,boring
解析：be tired of 对 …… 厌倦，把be省略了，故第一个空用tired；v-ing形式修饰物，故第二个空用boring。