题目内容：

Lucy and Lily can speak Chinese well,because they ___ China for six years
A.have been to
B.have been in
C.have come to
D.have gone to

优质解答

because they have been in China for six years.
她们之所以英语那么好,是因为她们已经在中国呆了6年了.
come to \ gone to 都是短暂的动作
只有in 最合适