问题

We ________ a sign at the park entrance to tell people to protect the trees and flowers.

A:put down
B:put up
C:put away
D:put off;

正确答案是：

同类题型

t have sensed that I ______ him. He suddenly glanced at me and said quietly, “Why are you staring at me like that”

He swallowed his words so much that I can never __________ what he is saying.

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They must have finished the work by the end of last month, ______

My teacher was so angry at _______________ he walked out of the office without a word.