问题
选择题
We must keep our room clean. Dirt and disease go _____, you know.
A．from time to time
B．hand in hand
C．step by step
D．one after another
答案
答案：B
本题是关键是理解句子的含义。“我们必须保持屋子干净，要知道灰尘总是伴随疾病。(灰尘和疾病总是手拉手。)”故B项符合题意。
