单选题 I took the glass very carefully lest it ______.
A. should damage B. would damage
C. had damaged D. should be damaged

【正确答案】 D
【答案解析】本题考查的是虚拟语气。Lest表示“以防万一”，后面用should形式的虚拟语气；而且杯子是被打坏的，故用被动，所以选D。