Your verbs look quite good -- the only verb that I needed to correct was in sentence 18.

I corrected some other things in the sentences. 

It is better to use letters to write smaller numbers...for the numbers one through ten at least.  "nine" instead of "9", for example.   (This is what teachers usually expect when you are writing sentences or essays for school).

"every day" and "everyday" have two different meanings.  "Every day" means the same thing as "each day" ("I eat cereal for breakfast every day."   "The bus is late again?  Ugh!  This happens every day!")   "Everyday" written as one word means "normal or typical"  (You shouldn't wear everyday clothes to a funeral -- you should wear your best clothes, like a dress or a suit."  "Everyday activities keep us so busy that we sometimes forget to call our relatives who live far away.").   Here's a test:  try saying the sentence with "each day" instead of "every day / everyday"...does the sentence still make sense with "each day"?  If the answer is yes, then the sentence will probably be correct with "every day" written as two words.  

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Is this correct? Past Simple

2. I bought this cup in Walmart                                                                       > at

6. I woke up,  brushed my teeth, put on my clothes and went out of the house > might be more native sounding to say "left the house"

10. My mom told me stories everyday when I was a child > every day (you can use everyday in the sense of "These are everyday clothes"
11. I swam in the lake everyday > same as #10, but the past tense is fine
14. My friend had a vacaction for 3 days                     > "was on vacation" or "took a vacation"
15. We enoyed visiting New York City > enjoyed
17. I tried to learn English for 5 years.  > When I heard this, I would be waiting for the second part of the sentence, like, "I tried to learn English for 5 years and failed" or something like that. Maybe you meant, "I have been learning English for 5 years" or "I started learning English 5 years ago"
18. My boyfriend ask me to be his girlfriend after we dated for 2 months.  > asked

Emilia,

I think  you are doing well with the past tense!

-Maria