When you come to the fence you can see a notice there saying “the grass.”A. putting up;

问题补充：

When you come to the fence, you can see a notice there saying “the grass.”

A. putting up; Keep off

B. putting up; Keep away

C. put up; Keep out

D. put up; Keep off

答案：

A. putting up; Keep off

B. putting up; Keep away

C. put up; Keep out

(答案→)D. put up; Keep off

解析：put up此处为过去分词作宾补；keep off=don’t walk on。本句意为“当你来到篱笆时你会见到那儿张贴了一个通告，写着:勿踏草地”。