Since you are in a public place, the noise of your radio must be to a level that we all feel fortable with.
A. supposed
B. allowed
C. attached
D. limited
网友回答
A. supposed
B. allowed
C. attached
(答案→)D. limited
解析：动词辨析。be limited to限制在…; be attached to附着于…;句意：因为你在公共场所，你收音机的音量要限制在一个我们都感觉舒服的水平。