ПОМОГИТЕ ПОЖАЛУЙСТА

первый вопрос: посмотрите на картинки и закончите предложения,используя условное предложение нулевого типа

2 If you send an email,it is free.

3 It is dangerous,if you don't wear a seatbelt.

4 If you have an injection,it doesn't usually hurt.

5 If you don't water plants and flowers,they die.

6 If the sea isn't calm ,it isn't safe to swim.