【题目】Floyd Landis made several lame excuses blaming medicine he had been taking for an injury, but these were all _________.
A. in progress B. in vain
C. in turn D. in tune
在线课程【答案】B
【解析】试题分析：考查介词短语意思及语境理解。句意：兰迪斯编了几个蹩脚的借口，推脱说是他因为受伤而吃的药的关系，但是这些都是徒劳的。A. 有进展；B. 徒劳；C. 轮流；D. 曲调正确，合拍。故B正确。