题目内容：

英语Mrs.Bliss kept the door and the windows shut lest the noise outside__her son's sleep.
A.would interfere with
B.had interfered with
C.interfered with
D.should interfere with

优质解答

选D lest在状语从句中跟should加动词原形,should可以省略.C结构虽然也对,但表达的是被语态,题目是主动 .来得及吧亲~

追问：

来得及，我刚要撤！