To join a reserch group,you first have to decide what kind of reseach you find truly___.

问题描述:

To join a reserch group,you first have to decide what kind of reseach you find truly___.
A interested
B interest
C interesting
D to interest

C 你发现那种研究很真的很有趣,interesting作宾语补足语,就是find research interesting