The workers in the Huashan Mountains have to       rubbish to keep the mountains clean.
#60114
A
turn up
B
pick up
C
mix up
D
give up
推荐题目
He was last seen _________in his office at about 7:15 p.m..
#60589
A
work
B
working
C
to work
D
worked
John, you ___play with the knife, you _____ hurt yourself.
#52293
A
needn’t; must
B
mustn’t; may
C
shouldn’t ; must
D
can’t; shouldn’t
I like _______the floor, it’s _______.
#62760
A
sweep; relaxing
B
to sweep; relax
C
sweeping; relax
D
to sweep; relaxing