The place,______,has been transormed into a modern capital city.A.as a small town B.once a small town C.being a small town D.though being a small town为什么选 B,其他几个错在哪里,

The place,______,has been transormed into a modern capital city.
A.as a small town B.once a small town C.being a small town
D.though being a small town
为什么选 B,其他几个错在哪里,

这句话是现在时态的被动语态 答案B 以前是个小城镇 和后面转变成一个现代化的首俯城市 形成对比 C D 和后面转变成一个现代化的首俯城市冲突 （成为一个小城镇） A 作为一个小城镇 只能说B 更加准确