이 영어 문법도 풀어조라 ㅈㅂㅠㅠㅠㅠㅠ

The teeth (have been bothering / had been bothering) Tom for some time. He knew he should have gone to the dentist's earlier. But he had put it off.
뺀 것보다 아팠던 게 전이니까 전잔가 그롬 뒷문장에 have gone은 또 뭐야 싀바 시제는 모르겟어 진차..