问题
选择题
(2014·南昌第二中学高三检测)We must keep our room clean，for dirt and disease go________，you know.
A．hand in hand
B．step by step
C．from time to time
D．one after another
答案
答案：A
考查介词短语辨析。句意为：我们必须保持房间清洁，因为脏与疾病是密切相关的。hand in hand连在一起；手拉手，符合句意。step by step逐步地；from time to time有时，不时；one after another一个接一个地。
答案： A