Sua loi sai:
1. The state (with the) (most large) productior of tooacco (products) (is) North Carolina
2. George Gresh win not only (composed) popular songs (for) musicals, (also) wrote (more serious) concerts
3. She was (too) tired (not to) walk (any) (further)
4. It (took) me a (long) time (to) recover (over) my illness
5. (What) (did you do) (at) 9 o'clock (last) night?
6. When I (was playing) the piano, (someone) (knock) (on) the door last night
1. most large -> largest
2. also -> but also
3. not to -> to
4. over -> from
5. did you do -> were you doing
6. knock -> knocked