Question

【题目】 If everyone makes a ___________ to protecting the environment, the world will become much more beautiful.

A. communication B. Competition

C. contribution D. Conversation

Answer 1

【答案】C

【解析】

试题分析：句意：每个人都应该为环境保护做出贡献。固定词组make contribution/a contribution to…对……做出贡献；contribute to…对……做出贡献。根据句意，应选C。