1.brother comma ,comma missing in mother and father , it also means comma
2.speak comma , says comma
Answer:
An avalanche happened when a huge area of snow melted.
Explanation:

Answer:
look in you text book and try to find out it yourself, others do not have that book which you have...
I therefore conclude that Learning from our mistakes and always conducting a positive attitude is the key to success. Having the confidence and optimistic attitude towards situations gradually helps you reach your goals.