IF SUSAN LEARNED MORE, SHE (BE) BETTER AT SCHOOL. → …...

13. - BAI KIEM TRA 45 SO 3 HK2TINH QUANG NINH HS YEU
BAI KIEM TRA 45 SO 3 HK2TINH QUANG NINH HS YEU

13. If Susan learned more, she (be) better at school. → ……….