What kind of things do people often buy during _____ Christmas and _____ Spring Festival?
From space, the earth looks blue. This is __________ about seventy-one percent of its surface is covered by water.
It is not their interest but the need of the market __________ influences students' choices of college majors.
To her joy, Delia earned first the trust of her students and then __________ of her colleagues.
It's time I __________ home. My mother should be waiting for me for dinner now.
He is a foreigner and he is not accustomed __________ like that while he is in China.