Question

you should take more exercises because that's the way to get fit

-->if

we can't do the job if we don't get help

-->unless 

if i were you, i wouldn't do that 

--> you should

the sounds from a vacuum cleaner can result  in permanent hearing loss 

--> the sounds

Answer 1

1 If you take more exercise, you can get fit

2 Unless we get help, we can't do the job

3 You should not to that

4 The sounds from a vacum cleaner can lead to permanent hearing loss

Answer 2

1. If you take more exercise, you will get fit.

2. Unless we get help, we can't do the job

3. You should not to do that

4. The sounds from a vacuum cleaner can lead to permanent hearing loss