题目内容
They have________signs in some places to remind (提醒)the visitors not to step on the grass.
| A．put on | B．put up | C．put down | D．put out |
B
答案 B [句意：他们已在一些地区张贴标志，来提醒游客不要踏草坪。put on穿上；put up张贴；put down放下；put out扑灭。]
练习册系列答案
相关题目