问题补充：
he visited, he wasted no time hearing farmers voices at home and in the fields.
A. Each time
B. In case
C. Even if
D. In time
答案：
(答案→)A. Each time
B. In case
C. Even if
D. In time
解析：句意：每次他下乡，他都抓紧时间听听家里和田间农民的心声。这里each time意为：每次。名词用作连词，引导时间状语从句。所以选A。
