---Would you like to open the window?It will ---the fresh air.(100)---Yes,I'd like to.A.let out B.let in C.let down D.keep out选B..进入A解释为让...出去C解释为让...失望D解释为抵御翻译你想开窗吗?这会让...let sth in吧，有let in sth的搭配吗？----我猜题目有问题。有啊举个例子These rubber shoes are letting in water．They need repairing．这双胶鞋漏水，得补一下了。You'd better open the window and let in the light and fresh air．你最好打开窗户让光线和新鲜空气进入室内。