Question

rewrite the sentinces as in the exemples 1 if harry doesn't phone we'll leave without him 2 unless sheila returns the money she owes me i won't be able to pay my rent if sheila doesn't return the money she owes me i won't be able to pay my rent sarah will be disappointed if you don't send here a birthday card. maria won't go to the theatre if peter does't go with her if you don't pay the electricity bill it will be cut off unless kate comes home soon her parents will call the police if the children don;t be have themselves they won't go to the zoo unless my mother offer to help me i won't have time to make all the preparations unless you tidy your room i won't take you to the party if dennis doesn't write soon i will be very upset

Answer 1

Unless you sent Sarah a birthday card, she will be disappointed.
Unless Peter goes with Maria to the theatre, she won't go at all.
Unless you pay the electricity bill, it will be cut off. 
If Kate doesn't come home soon, her parents will call the police.
Unless the children behave themselves, they won't go to the zoo.
If my mother doesn't help me, I won't have time to make all preparations.
If you don't tidy your room, I won't take you to the party.
Unless Dennis writes soon, I will be very upset.