If people keep polluting the rivers, no fish there will survive . A. at all costs B. once

If people keep polluting the rivers, no fish there will survive .
A. at all costs
B. once in a while
C. in the long run
D. by no means

A. at all costs B. once in a while (答案→)C. in the long runD. by no means解析：in the long run终究，最后，从长远看。at all costs不惜任何代价；once in a while偶尔，有时；by no means决不，一点也不。

这个问题的回答的对