1. If you (help) ............. me. I (be) ....... happy.
2. Sam (not go) ........... to scchool if he (not be) ............... healthy.
3.My mum (be) .............. happy if I (buy) ...........her some flowers.
4.If the weather (change) ......., I (go) ........... for a walk.
5.Sam (write) .......... to you if you (give) ............ your address.