问题补充:
----Do you know how toa crying baby?
---Sorry, I don’t know . I think it’s too hard.
A. fall down
B. turn down
C. put up
D. calm down
答案:
A. fall down
B. turn down
C. put up
(答案→)D. calm down
解析:fall down失败,倒塌;turn down关小,调低;put up提供,建造;calm down镇定下来。句意:你知道如何让一个哭泣的婴儿平静下来吗?——抱歉,我不知道。我认为太难了。结合语境可知选D。