If it is a nice day Tomorrow, we go to the beach

Sentence 3:Conditional Sentence - Type 1
4.If it is a nice day Tomorrow, we go to the beach.
=>Should
5.If Nga doesn't leave now, You will miss the bus.
=>Unless
6.If he eats all that, he will be ill.
=>Should
7.She will lose her Job If she comes late again.
=>Unless