2 if i don’t have a bottle, i won’t be able to send a message (1st)
3 if i didn’t save the radio transmitter, i cant call for help (2nd)
4 if there are too many sharks, i won’t be able to escape (1st)
5 if i’m by myself, i feel lonely (0 conditional)
6 if i find some coconuts, i will be able to drink some coconut milk (1st)
7 if i haven’t got a knife, i can’t cut any branches down (0 conditional)
8 if nobody finds me, i won’t be able to see my family again (1st)