The boy often gives a right answer to the teacher 's question,____just a minite.So he's usually the

The boy often gives a right answer to the teacher 's question,____just a minite.So he's usually the
The boy often gives a right answer to the teacher 's question,____just a minite.So he's usually the teacher 's pet.
A.thought
B.having thought
C.and to thought
D.thinking
详细的说说各个选项的区别,还有选什么