(单选题)

Currently, efforts to end food waste and promote thrift ______ by catering companies and restaurants in while different-sized portions are provided to dinners.

A.are made

B.are being made

C.will be made

D.have been made

参考答案：B

参考解析：

考查现在进行时的被动语态。句意：目前，餐饮公司和餐馆正在努力杜绝食物浪费和提倡节俭，同时提供份量不同的晚餐。根据“Currently”可知应用现在进行时，表示现阶段发生的动作，且efforts与make之间为被动关系，应用被动语态。make efforts意为“做出努力”。故选B。

知识点：