Lincoln’s mother died the farm a cold winter morning of 1818.A. on onB. in inC. on in

问题补充：

Lincoln’s mother died the farm a cold winter morning of 1818.

A. on, on

B. in, in

C. on, in

D. in, at

答案：

(答案→)A. on, on

B. in, in

C. on, in

D. in, at

解析：在农场要说:on the farm; 在一个寒冷的冬天要说: on a cold winter,所以选A.