нужно,умоляю) 1) if the weather (be)fine,i (go) to the beach. 2)we(do) it when john(come). 3)when mary (ring) me up,i (talk) to her. 4) if it (rain),we (stay) at home. 5)if it (rain,not),we (go) for a walk

1) If the weather is fine, I'll go to the beach.
2) We shall do it when John comes.
3) When Mary rings me up, I shall talk to her.
4) If it rains, we'll stay at home.
5) If it doesn't rain, we'll go for a walk.