【题目】—I haven’t seen Daisy since the party held six months ago.
—She is busy — she is _____ a new dictionary.
A. turning on B. passing on
C. working on D. putting on
在线课程【答案】C
【解析】
考查动词词组。上句：自从六个月前举行晚会以来我没有看见过Daisy。下句：她是忙碌的——她正在致力于一本新词典。A. turning on打开； B. passing on传递； C. working on致力于；D. putting on穿上，戴上。故选C。