Evidence has been piled up drinking water after getting up in the morning contributes to one’s health.
A. what
B. which
C. if
D. that
网友回答
A. what
B. which
C. if
(答案→)D. that
解析：句意：证据表明早晨起来的喝水有助于人的健康。分析句子结构可知，空格后面的部分是解释说明 evidence 的 内容的，是 evidence 的同位语从句，从句中不缺任何成分，故选连词 that。选D。