Can anyone look this over? And see if I have it right.
1.) ¿Cuál es la fecha de hoy? —Hoy es el dos de marzo.
2.) Hoy es domingo. Después mañana es martes.
3.) El veinticinco de diciembre es la navidad
4.) "January 1st" es e de enero. El año nuevo.
5.) Hoy es viernes. Mañana es sábado.
6.) "Easter" en español es La pascua .
7.) La casa de mi amiga es bonita.
8.) ¿Qué es? —Es una computadora.
9.) ¿Qué significa bailar? Dance
10.) ¿Qué día hoy? —Es jueves.
Answer the following questions with complete sentences in Spanish.
11.) ¿Cuánto es tu cumpleaños? Mi cumpleaños es el 23 de mayo Mi Cumpleaños mayo 23
12.) ¿Cuál es la fecha del Día de la Independencia? (4th Of. July) 4th de julio
13.) Tell someone when Christmas Eve is. Nochebuena es 24 de diciembre La víspera de Navidad es el 24 de diciembre
14.) ¿Mañana es martes, que dia es hoy? El lunes
15.) What is the date of Valentine's Day? El domingo, Febrero 14, 2010
16.) ¿Qué es? (Translate: It's a pencil.) Es un lápiz La es un lápiz.
17.) How would you say, "August 1st is the day after tomorrow"? El Agosto 1st es el día después mañana.
18.) What are three items you would need for a party? (balloons, decorations, music) So Los globos, la decoración, la música?
19.) Translate: "Tomorrow is Thursday, December 21st." Mañana es Jueves, el veinte y uno de diciembre
20.) Translate: "My birthday is today." Mi El Cumpleaños is hoy.
Please tell me how I have done or If I can improve it at all thank you. (Bolded words are my answers)
(If you think it is good you can vote it up or post an answer 
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25 Answers
You could try checking again number 2, 7, 8, 11, 13, 16, 18 (¿and?) and 20.
Also remember that in Spanish when saying dates, we use cardinal numbers. In English we use ordinal numers, so check that aswell.
A couple of clues so you can challenge yourself again 
Ego, great answer, welcome to the forum
Drakus, try again, Edo left you the incorrect sentences
pasado mañana means the day after tomorrow
pasado is the participle of pasar and in English you could translate it as past however, think more of it as the conjugated participle form in English: passed
The translation of pasado mañana becomes the passed morning or the last morning passed, and I really don't think the term tomorrow comes into play as you are wanting it to.
Think of translating it this way: The day after tomorrow (using después)
Or this way: The morning following (using siguiente)
18.) What are three items you would need for a party? (balloons, decorations, music)
globos, decoraciones, música.
- With objects, usually when you put them in a list or they are by themselves, it's best to use the definite article along with them, making sure the two agree in gender and in quantity (singular vs. plural)
- the balloons, the decorations, the music
This is also a good habit to get into doing, so that down the road, you will remember better the gender of those objects 
13.) Tell someone when Christmas Eve is.
Nochebuena es 24 de diciembre
When giving a date, the number (day) needs follow a definite article. Think of it this way = Cristmas Eve is the 24th of December
8.) ¿Qué es? —Es ello un computadora.
Es es un computadora.
This is the verb SER conjugated into thrid-person singular = ES
- ES can be translated as = he is, she is, it is and in Spanish the subject pronoun is not always necessary (he, she, it) you can just use word ES alone
- computadora is a feminine noun, you'll need to be sure the article agrees in gender
7.) El casa de mi amiga es bonita.
CASA is a feminine noun, the article must agree with it
I loved everybody's ideas of corrections! Wonderful job
2.) Hoy es domingo. Pasado mañana es martes.
3.) El veinticinco de diciembre es - navidad
4.) "January 1st" es uno de enero. El año nuevo.
12.) ¿Cuál es la fecha del Día de la Independencia? (4th Of. July) Es el cuatro de julio.
13.) Tell someone when Christmas Eve is. Nochebuena es el 24 de diciembre
14.) ¿Mañana es martes, que dia es hoy? Es lunes
17.) How would you say, "August 1st is the day after tomorrow"? El primero de agosto.(Sentence???
18.) What are three items you would need for a party? (balloons, decorations, music) Los globos, la decoración, la música;.S
19.) Translate: "Tomorrow is Thursday, December 21st." Mañana es Jueves, el veinte y uno de diciembre
On number 2 my school says that pasado mañana means the day after tomorrow
so I'm kind confused here
Got to go
oops wrong button lol ok it done
haha were on the second page 
Sorry, a lot of different sentences to look at, so why not update original question again so we can have a look at where we're at?
Check number 2, 7, 8, 11, 13, 16, 18 again--------------------
So Los globos, la decoración, la música?
So something like this
La víspera de Navidad es el 24 de diciembre
Thank you for all this help
