—Itsmellsterrible.Whathashappenedhere?—Look,thereismuc...

问题详情：

 —It smells terrible. What has happened here?

—Look, there is much waste gas _____ from the chemical factory.

A. pour         B. pouring             C. to pour              D. pours

【回答】

B

知识点：简单句

题型：选择题