单选题 ______ under negotiation is a proposal to disallow pets in this apartment complex.
A. Current
B. Currently
C. Currency
D. Currents

【正确答案】 B
【答案解析】中级问题 能看出它是倒装句吗?这里的主语是a proposal,动词和表语是is under negotiation。“介词+名词”的结构也可以看做是形容词的用法,所以这里可以做句子的表语。由于句子不缺少成分,所以空格内应填入副词。
[高频词语] under negotiation 在协商中 disallow 禁止 apartment complex 公寓小区