___ about wild plants that they decided to make a triop to Madagascar for further research.

题目

___ about wild plants that they decided to make a triop to Madagascar for further research.
选项：A.So curious the couple was
B.So curious were the couple
C.How curious the couple were
D.The couple was such curious

答案

B so+形容词在句首,用部分倒装,这道题里就是系动词提前