Here are the corrections for the sentences provided:

1. **They go to **school** five days a week.**
- *Correction:* Remove "the" before "school" since it is used in a general sense.

2. **Vietnam is a country of many religions and beliefs.**
- *Correction:* Change "Viet Nam" to "Vietnam" (common spelling) and "the country" to "a country" since it is general.

3. **My son started to play **baseball** when he was ten.**
- *Correction:* Change "staryed" to "started" and remove "the" before "baseball" as it is also a general term.

4. **How often is **the** festival celebrated? - Every year.**
- *Correction:* Add "the" before "festival" and remove the space before the question mark.

5. **There is an LG television in my room.**
- *Correction:* Change "a" to "an" because "LG" begins with a vowel sound, and add a period at the end of the sentence.

6. **Emily comes from **France.**
- *Correction:* Remove "the" before "France" since it is used when referring to countries in general, and add a period at the end.

7. **Today, we are going to discuss **the** necessity of traditions.**
- *Correction:* Add "the" before "necessity" to specify which necessity is being discussed and remove the extra space before the comma.

8. **The woman of the house looks after her parents, husband, and children.**
- *Correction:* Add "The" at the beginning of the sentence and include commas for clarity in the list.

9. **You shouldn't litter on the temple grounds.**
- *Correction:* Change "don't should" to "shouldn't" for correct phrasing and "litter the temple ground" to "litter on the temple grounds."

10. **We should show respect for the monks and elders.**
- *Correction:* Remove "the" before "elders" as it is generally referential and do not need to be specified.

Here are the complete corrections:

1. They go to **school** five days a week.
2. Vietnam is **a** country of many religions and beliefs.
3. My son **started** to play **baseball** when he was ten.
4. How often is **the** festival celebrated? - Every year.
5. There is **an** LG television in my room.
6. Emily comes from **France**.
7. Today**,** we are going to discuss **the** necessity of traditions.
8. **The** woman of the house looks after her parents**,** husband**,** and children.
9. You **shouldn't** litter **on** the temple **grounds**.
10. We should show respect for the monks and **elders**.