Here are the answers based on your text:
e.g. Most people nowadays
B imagine life without mobile phones.
Thanks to mobile phones, our lives have become
A simpler.One of the advantages of mobile phones is that
C they let us call people wherever we are.Mobile phones are also used to
A send wishes.The main disadvantage of mobile phones is that
B they are bad for our health.Mobile phones have
C more advantages than disadvantages.