I studied science last night.

I had a good time with my family.

I called Eunhui and talked for a long time.

I took a shower in the bathroom.

I made cheese cakes with my mother.

I sent some e-mails to my friends.

I bought a wallet at Home Plus.

I read a newspaper.

I listened to music on my smart phone.

I searched for many voice recorders on the website.

(I posted some more sentences containing the past tense. Would you check these sentences as well? Thank you.)

They are all correct

Sure! I'd be happy to check your sentences for you. Here they are:

1. I studied science last night.
- This sentence is in past tense and it is grammatically correct.

2. I had a good time with my family.
- This sentence is in past tense and it is grammatically correct.

3. I called Eunhui and talked for a long time.
- This sentence is in past tense and it is grammatically correct.

4. I took a shower in the bathroom.
- This sentence is in past tense and it is grammatically correct.

5. I made cheese cakes with my mother.
- This sentence is in past tense and it is grammatically correct.

6. I sent some e-mails to my friends.
- This sentence is in past tense and it is grammatically correct.

7. I bought a wallet at Home Plus.
- This sentence is in past tense and it is grammatically correct.

8. I read a newspaper.
- This sentence is in past tense and it is grammatically correct.

9. I listened to music on my smartphone.
- This sentence is in past tense and it is grammatically correct.

10. I searched for many voice recorders on the website.
- This sentence is in past tense and it is grammatically correct.

All of your sentences are correctly written in the past tense. Well done!