【評論主題】30. You should ________ up on English because that is your weakest subject.(A) bring(B) lift(C) poli

【評論內容】polish sth up用於技術：to improve a skill, especially when you have allowed it to become less

【評論主題】30. You should ________ up on English because that is your weakest subject.(A) bring(B) lift(C) poli

【評論內容】polish sth up用於技術：to improve a skill, especially when you have allowed it to become less