[单项选择题]Nobody knows how long and how seriously the shakiness（不稳定） of big businesses will （） down the economy.

[单项选择题]We forgave her anger because we knew that her father's illness had put her under great （）

[单项选择题]People appreciate（）with him because he has a good sense of humor.

[单项选择题]She is very nice, but because she has a（）way of speaking, she is slow in making friends