1. The teachers donate the blood at Red Cross
2. In case of an accident, if we loss too much blood, we need to use this blood.
3. อันนี้รอคุณพยาบาลนะคะ
ลองตอบค่ะ
1.The teachers 're going to donate their blood at Thai Red Cross Society.
2.If we have an accident and we loss huge blood, we need to receive the donated blood.
3.But some blood group are compatible, some are not/incompatible.