He developed ______ deep interest in insects when he was at ______ age of 8.

A. a; a　　　 　　　 B. the; the　　 　　 C. a; the　　 　　　 　　　　　　 D. the; a

He developed _____ deep interest in insects when he was at _____ age of 8.

A. a; a　　　 　　　 B. the; the　　 　　 C. a; the　　 　　　 　　　　　　 D. the; a

He ________ a deep interest in insects when he was at the age of 8．

1. A.
   trade
2. B.
   got
3. C.
   became
4. D.
   developed

He ________ a deep interest in insects when he was at the age of 8．

[　　]

A. made　　      B. got　　    　　  C. became　　   D. developed