问题：
The waste pipe is blocked try sluicing it out with
答案：
D句子意思：废旧管子被堵塞了，试着用热水冲冲。rush：仓促行事。例如：They rushed into marriage．他俩仓促结了婚。brush：刷，画。例如：to brush the teeth，刷牙。crush：压破，粉碎。如：to crush one’S hope．使希望破灭。flush：冲洗。D项最符合题意，例如：Drinking water helps to flush out toxins from the body．饮水有助于排出体内的有毒物质。