Mary is [ ]to answer the question correctly

问题描述:

Mary is [ ]to answer the question correctly
A;too clever
B;so clever
C;clever enough
D;cleverer enought
必须有理由

选C
在这里用too...to...有讽刺意味,回答此问题过于聪明了,很不符合语境.
so...that...一般连起来用,表达如此的聪明,可以正确的回答问题的意思,一般不与to连用
clever enough表达足够聪明的意思.其意思为具有足够能力去做某事.
如:the bag is large enough to put all these in.
D选项错误.