The air is deadly polluted because some factories don’t the rules to protect the environment.
A. appreciate
B. regard
C. honor
D. respect
网友回答
A. appreciate
B. regard
C. honor
(答案→)D. respect
解析：
试题分析: A感激；B认为；C尊重；D尊敬，遵守。句意：因为一些工厂不遵守保护环境的条例，所以空气被严重污染了。根据词义搭配可知答案选D。