Fix the Mistake.
What is Wrong?
100

" She said that i had to bring dessert." Jake told us.

What is capitalize "I"?

100

My sister went North down the street.

What is un-capitalize north?

200

Next year the 7th and 8th graders are going to Washington DC, maybe they'll see the lincoln memorial.

What is capitalize Lincoln Memorial?

200

Tomorrow is my first day of High School.

What is un-capitalize high school?

300

The company, at&t, used to have a big sign on top of the giants stadium.

What is capitalized AT&T and Giants?

300

" Gosh dang it, tomorrow is Monday." She groaned. 

What is nothing is wrong, everything is correct in this sentence?