Answer: 1. By the time Janice got home, her ice cream had already melted in the car. She could hardly wait to have a dish of ice cream, but she was very disappointed.
Explanation: The past perfect (formed with the past tense of have and the past participle of the main verb) is used for something that started in the past and continued up to a given time in the past. Both of the events - Janice getting home and the ice cream melting, took place in the past. Has is the present tense.
2. "If you was in Wyoming and couldn't hear no wind blowing, what would people call you?" asked Jethro. "Dead" replies his buddy Herman.
This is OK if it is reported speech. Grammatically, it is incorrect. The second person past simple of to be is were - you were in Wyoming is how it should read.
You could hear no wind blowing or could not hear wind blowing or could not hear any wind blowing is the correct form.
3. It was believed by Aztec ruler Montezuma that chocolate had magical powers and can act as an aphrodisiac.
Could act as an aphrodisiac - subjunctive mood. The subjunctive mood is a form of a verb used to express statements that are imagined or which someone believes to be true but cannot prove it.
4. The hurricane that was happened off the coast of Florida destroyed over 5,000 homes, Bob couldn't barely find any pieces of his house a week later.
The hurricane that happened - past simple for single completed actions in the past. Bob could barely find...couldn't barely find is a double negative which means he could find pieces of his house.
5. Suspicions of arson are being raised by the Fire Department following the burning of the new Chip and Dale Furniture Factory.
Capital letters for proper nouns.
1. I seen what she was hiding behind her back.
I saw what was behind her back. To see is an irregular verb.
2. He come around here yesterday asking questions, but we're use to that.
He came...past tense of to come.
3. Having forget the key to his house, the man quietly sneeked back to his car to look for a spare.
Having forgotten...the man sneaked
"Having" + past participle means that the person(s) being referred to has done the action of the verb. Easier would be As he had forgotten the key...
4. Austin don't like to be awokened until noon.
Austin does not like, or doesn't like to be woken up. The first mistake is lazy, the second is an understandable error - you could use awakened, but this sounds very old fashioned and formal.
5. The kids done good work all day.
The children did good work all day. Done is American slang. Kids are young goats - the proper noun is children.