----- Nội dung dịch tự động từ ảnh ----- Find the underlined part in each sentence that should be corrected: 16. While I did (A) my homework (B), I had (C) a (D) good idea. 17. She has (A) a lot (B) exercises do (C) this (D) evening. 18. Ann complains (A) noise (B) about (C) anything she doesn't (D) like. 19. She suggested (A) taking the plane (B) this evening or to go (C) by (D) train.