It was really of your brother not to play the guitar while you were preparing your lessons.
A. modest
B. outspoken
C. considerate
D. determined
网友回答
A. modest
B. outspoken
(答案→)C. considerate
D. determined
解析：考察形容词词义辨析。A谦虚的；B直言不讳的；C体贴的，考虑周到的；D有决心的，意志坚定的；句意：当你在备课的时候，你的兄弟没有玩吉他，他真是很体贴。根据句意说明C正确。