The boy has _____ a fine knowledge of geography by careful study.
I thought him nice and honest ______ I met her.
It is not who is right but what is right ______ is of importance.
That was a terrible night . The rain was pouring down, _________ thunder and lightning.
The bus hit against a tree in the fog and __________to the deep valley, with ten passengers killed and twenty wounded.
Understanding the cultural habits of another nation, especially ____________ containing as many different subcultures as the United States, is very difficult.