选词填空:将valid, vain, vacant, vague放到合适的位置,完成句子。
How long is the ticket ____ ?
He tried in ____ to get into contact with the local branch.
He was appointed to the ____ post.
His thought was too ____ to be described.
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选词填空:将valid, vain, vacant, vague放到合适的位置,完成句子。
How long is the ticket ____ ?
He tried in ____ to get into contact with the local branch.
He was appointed to the ____ post.
His thought was too ____ to be described.