Answer:
We can't have a picnic unless it's nice outside.
Don't leave the TV on, unless you're watching it.
We can't do the job unless we get help.
I wouldn't have bought this picture unless I liked it.
You cannot win unless you work hard.
Unless the boys work hard, they will fail.
Step-by-step explanation:
{} = Removed
() = Added
[] = Switched around
Just like the other, you switch and remove some around so they make sense. Here are some examples..
We can't have a picnic if it isn't a nice day.
We can't have a picnic {if} {it} {isn't} {a} nice {day.}
We can't have a picnic (unless) it's (nice) (outside).
OR
Work hard. Otherwise you cannot win.
[Work hard.] {Otherwise} [you cannot win.]
You cannot win (unless) you work hard.
Hope this helped!