The workers in HuaShan Mountains have to     rubbish to keep the mountains clean.
#52269
A
turn up
B
pick up
C
mix up
D
give up
推荐题目
_______ is an unhealthy life style. 
#52908
A
Eating junk food
B
Drinking milk
C
Eating vegetables
D
Exercising often
It _________ us about two hours _______ that picture last night.
#58106
A
took; to finish
B
spends; to finish
C
takes; finish
D
spent; spent