NAM'S TEACHER / TEACH / HIM / HE / COME / HERE / 2000.A. NAM’S TEA...

48. Nam's teacher / teach / him / he / come / here / 2000.

A. Nam’s teacher teaches him when he came here in 2000.

B. Nam’s teacher taught him when he came here in 2000.

C. Nam’s teacher teaches him when he comes here in 2000.

D. Nam’s teacher has taught hime since he comes here since 2000.