第2题:[单选题]Because his partner had to go to Sydney. Mr. Zazueta had to finish work on the adverting campaign on____. A.his own B.himself C.alone D.solo 参考答案:A A选项与on构成固定短语,意为“独自”;B选项意为“他自己”;C选项意为“单独地、独自地”;D选项意为“独唱、独奏”。题目意为“因为他的搭档要去悉尼,Zazueta先生只好独自完成广告活动。”四个选项中只有A选项可以和on搭配。