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The five concrete Abstract noun sentences are given below for your information.
1. The bravery of the Indian soldiers can never be questioned. (Bravery)
2. The brutality of the Paris attack by ISIS shocked the world. (Brutality)
3. Stella could not hide her excitement about coming first in exam. (Excitement)
4. When i got the chance to become a pilot i grabbed the opportunity with both hands. (Opportunity)
5. In life, peace of mind is the most important thing.(Peace)