Mother said she was by no means annoyed; , she was happy to be able to make her guests feel at home.
A. all in all
B. for one thing
C. on the contrary
D. by the way
网友回答
A. all in all
B. for one thing
(答案→)C. on the contrary
D. by the way
解析：考查介词短语：A. all in all总共B. for one thing首先，C. on the contrary正相反D. by the way顺便问一下，句意：妈妈说他绝不会生气，相反，她很高兴能让客人象在家一样。选C。