Wherever he traveled in those days, he always down what he saw and heard.
A. writes
B. has written
C. wrote
D. had written
网友回答
A. writes
B. has written
(答案→)C. wrote
D. had written
解析：本句的状语是Wherever he traveled in those days表示的是一个过去所发生的事情，使用主句中使用一般过去时。句义：在那些日子里，无论他去哪里旅行，他总是会把所见所听到的都写下来。故C正确。