1. ride without certainly a You helmet shouldn't motorbike a
You certainly shouldn't ride a motorbike without a helmet.
2. said such shouldn't him horrible You things to have
You shouldn't have said such horrible things to him.
3. feel her you really You tell should now
You should tell her how you really feel.
4. should have she her the left You present given before
You should have given her the present before she left.