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TheworkersintheHuashanMountainshavetorubbishtokeepthemountainsclean.[]A.turnupB.pickupC.mixupD.giveup

题目详情
The workers in the Huashan Mountains have to      rubbish to keep the mountains clean.
[     ]
A. turn up          
B. pick up        
C . mix up  
D. give up
▼优质解答
答案和解析
B