Question

【题目】To protect the environment, the local government has ______ a lot of signs to warn the citizens not to litter the ground.

A. add up B. take up

C. set up D. put up

Answer 1

【答案】D

【解析】

试题分析：A. add up加起来，B. take up占据，从事，C. set up建立，D. put up搭建，张贴，竖立，句意：为了保护环境，当地的政府竖立很多标志警告市民不要乱扔垃圾。根据句意选D。