Пожалуйста, помогите с Английским ( Conditionals )

2 If I had a bottle, I would send a message
3 If I had saved the radio transmitter, I would have called for help
4 If there weren't too many sharks, I would escape
5 If I weren't by myself, I wouldn't feel lonely
6 If I find some coconuts, I will be able to drink some coconut milk
7 If I had a knife, I would cut some branches down
8 If nobody finds me, I'll never see my family again