1.we're sorry, she won't come here 
We wish…………she would come here
2.It rains heavily today
They wish…………………it wasn't rain heavily today
3. there isn't electricity in my region
I wish…………………there was  electricity in my region
4. my friends don't write to me
I wish………….. my friends wrote to me
5. I have to tidy the yard 
I wish…….............i didn't have  to tidy the yard 
6. I'm sorry,I can't play the piano with you 
I Wish …................i could play the piano with you 
7. What a pity! You aren't here with us now
I wish……...................were here with us now