Ⅱ. 单项填空（共15小题；每小题1分，满分15分）
21. The car is______ very good______ .
A. on；conditions B. in; condition
C. about；condition D. in；conditions
【解析】选B。in good condition表示“状况良好”。
22. The subject_______ I am interested is English.
A. in that B. that
C. in which D. which
【解析】选C。in which引导定语从句，修饰subject。其中be interested in为固定搭配。
23. The reason_______ he failed to be the leader of our group is_______ he seemed to be over self-confident.
A. that; which B. that; why
C. why; which D. why; that
【解析】选D。The reason why. . . is that表示“……的原因是……”其中why引导定语从句修饰reason，that引导的从句充当表语。
