1,If we send  an invaitation ,our friends will come to our party.
2.He won't understand  you if you whisper
3,They won't  survive in the desert if they  don't take  extra water with them 
4, If you press CTRL+s ,you will save the file
5,You will cross  the Channel if you fly from Paris to LonDon
6,Fred will answers to phone if his wife has  a bath
7,If Claire wears  this dress at the party ,our guests won't stay  any longer
8,If I touch this snake ,my girlfriend won't scream 
9,She will forget  to pick you up if you don't phone her
10,I will remember  you if you give  me a photo
                  Chúc bạn học tốt ạ!