--- Our new house was pletely in mess after the party was over.
--- Don’t worry. We can clean it by means of our robot.
A. a; /
B. the; the
C. the; /
D. a; the
网友回答
(答案→)A. a; /
B. the; the
C. the; /
D. a; the
解析：考查冠词的用法。这两个空都是固定短语，in a mess 一团糟，by means of 凭借什么样的方式，手段，所以选A。