—Itsmellsterrible.Whathashappenedhere?—Look,thereisache...

問題詳情：

—It smells terrible. What has happened here?

—Look, there is a chemical factory ________ waste water into the river.

A. pour                       B. pouring                   C. poured

【回答】

B

知識點：相似 相近詞比較

題型：選擇題