Ответ:
if she passed the exam , her parents will buy her a new laptop
if my computer didn't crash , i wouldn't loss all my work
if you had a MP3 player , you could listen to music
if you told me your email address , i could send you the pictures
if you installed antivirus software , you wouldn't get virus
if you promised me to take care of my smart phone , i will lend you.
if you join a social network, you will be able to keep in touch with all your friends
Объяснение:
sorry if there is any mistake .. that's my best