AgroupofvolunteersgototheGreenLakeParkto

问题详情：

A group of volunteers go to the Green Lake Park to ___________ litter every month.

A. put up     B. set up      C. pick up     D. cheer up

【回答】

C   拾起，捡起用pick up。put up张贴  set up建立  cheer up让某人欢呼。

知识点：动词和动词短语

题型：选择题