【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

【答案】B
【解析】考查介词短语。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，但是这些都是徒劳的。A. in progress”有进展“；B. in vain”徒劳“；C. in turn”轮流“；D. in tune”曲调正确，合拍“。故B正确。