Which one of the following is a noun?

Which one of the following is a noun?

Floods can cause tremendous damage.  They can ruin houses, roads and buildings. Floods can take down trees and cause mudslides. It often leaves mud, sand and debris behind.  It can take months to clean up after a flood.
 What is the main idea?

Soccer is known in some countries as football. It is a popular sport across the world, with over 200 countries playing the sport. It is estimated that over 250 million people, both men and women, play soccer. The sport has been part of the Olympic games from 1900 to 1928 and from 1936 to today.
 What is the main idea?

Which sentence suggests that Joanna rode her bike to school?

Darin and Gary had worked all winter down in the basement putting together a model radio controlled airplane. Darin instructed Gary how to make every part, but he allowed Gary to do all the work himself. Gary had to cut out all of the balsa wood parts, glue the pieces together and attach the special skin onto the wooden body of the plane. They even practiced flying a radio controlled model plane on a computer program. Darin drove them to a field to test out the plane. When they returned home, Gary came home crying with his plane in a box. He never worked on a model plane again.
How old do you think Gary is?

Animals in the forest have a wide variety of adaptations.  Monkeys have long tails.  They can use them almost like another hand.  This helps them swing quickly through the tops of trees.  They can even do this while holding their babies or gathering food.  Giraffes need to reach leaves at the tops of tall trees.  Having a long neck is an adaptation that allows them to do this.  How do monkeys use their tails as an adaptation? 

Living things adapt to their environment so they can survive.  An organism adapts when it develops a behavior that makes it more likely to survive.  It can also adapt by forming a physical characteristic or body part that helps it survive.  What does the word adapt mean in the first sentence?

Every day after work Paul took his muddy boots off on the steps of the front porch. Alice would have a fit if the boots made it so far as the welcome mat. He then took off his dusty overalls and threw them into a plastic garbage bag; Alice left a new garbage bag tied to the porch railing for him every morning. On his way in the house, he dropped the garbage bag off at the washing machine and went straight up the stairs to the shower as he was instructed. He would eat dinner with her after he was “presentable,” as Alice had often said. What type of job did Paul have?

As I walked in the door, I was amazed at the beautiful colors and smells. I knew it would be hard to decide what I would buy with my $3. The chocolate truffles looked delicious, but they were expensive. The jelly beans were not only cheaper, but so colorful! With so much to choose from, I knew I would be here a long time. Where am I?

What does the word worried mean i the sentence: 
Mother was worried about her brother.

What does the word proud mean in the sentence:
Tony is proud of his little brother.

The wind blew through his hair as the boy watched the clouds roll in. As the waves grew bigger and bigger, he decided it was time to ride home. What is the boy doing?

Sam woke up and saw the sun shining in the sky. He packed his swimming suit, a towel, a beach ball, and his sandals in his bag. Then, he went to the kitchen and made a sack lunch.
Sam is most likely going to ___________________.

It was raining outside. Sue got out of bed and got dressed for school. Then, she ate breakfast and grabbed her backpack.  Before Sue left the house, she probably ___________________.