【题目】The beautiful girl chose to teach in a village school, though she ______ in a big city for an easier life.
A.could stayB.could have stayed
C.must have stayedD.must stay
在线课程【答案】B
【解析】
考查情态动词的完成式。句意：这个漂亮的女孩选择在一所乡村学校教书，尽管她本可以留在大城市过更轻松的生活。情态动词的完成式：could have done“本来能做而没有完成”。故选B。