DOLPHINS ARE………. . A. MAMMALS B. THE ANIMALS WHICH LAY E...

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

17. Dolphins are………. .

A. mammals B. the animals which lay eggs. C. insects D. fish