Question

【题目】People throughout the world together now to protect the natural environment.

A. are working B. worked

C. will work D. have worked

Answer 1

【答案】A

【解析】句意:全世界的人们现在都在一起努力保护自然环境。work together是固定搭配，意思是“合作、共同工作”，本题考查时态，根据now可知本题选择现在进行时。故答案选A。