They have put______a plan to improve the traffic in this metropolis.
A. away
B. across
C. out
D. forward
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中国的中央银行—中国人民银行采用二元式组织形式。()
No one wants to make friends with him, because he always keeps a______face.
A. curved
B. straight
C. long
D. frightening
Weve arranged to go to the cinema on Wednesday, but we can be______and go another day if necessary.
A. changeable
B. moveable
C. flexible
D. fluid