If we keep wasting so much energy are that our oil wells will dry up and the environment

问题补充：

If we keep wasting so much energy, are that our oil wells will dry up and the environment will be destroyed.

A. problems

B. difficulties

C. questions

D. chances

答案：

A. problems

B. difficulties

C. questions

(答案→)D. chances

解析：A. problems问题，B. difficulties困难，C. questions问题，D. chances机会，句意：如果我们一直浪费这么多的能源，可能我们的油井会干涸，环境也会被破坏。这里是句型：Chances are that…“可能会…”，选D。