—We'dbetternotbuycupsorboxeswhichcanbeusedonlyonce.—Tha...

问题详情：

—We'd better not buy cups or boxes which can be used only once.

—That's right. It will save energy and ________ waste.

A. increase  B. reduce  C. produce

【回答】

B

知识点：动词和动词短语

题型：选择题