me ayudan con ésto plis, doy coronita

If Elena ______ ( visit ) is , we _____ (go) out tonight.
They ______ ( come) again, if he _____ (organise) a party.
Alejandra _____ ( be ) happy, if Beta ____ (be) with her.
If I _____ (not/be ) at school, I ____ (be ) sleeping at home.
If Sara ____ ( stay ) at home, she _____ (not/have) many problems.​