Question

【题目】The volunteers_____many signs to remind people to protect the environment.

A. put onB. put upC. put downD. put off

Answer 1

【答案】B

【解析】

句意：志愿者们张贴许多标志来提醒人们保护环境。A. put on穿上；B. put up张贴；C. put down放下；D. put off推迟。根据下文to remind people to protect the environment.可知上文是说张贴许多标志。根据题意，故选B。