After living for years in a big city, they found it difficult to settle ______ in a town.（ ）
A.for
B.at
C.up
D.down
正确答案是D
After living for years in a big city, they found it difficult to settle ______ in a town.（ ）
A.for
B.at
C.up
D.down
正确答案是D