Answers

2014-02-25T09:05:09+08:00
Use there to refer to a physical or abstract  place
ex.
There is an old truck

Use their to show possession and it is commonly followed by a noun 
ex.
 Their bird can sing a song.

Use Where when describing location,place or such as "at in or to what place"
ex

The dog hospital is where dogs got to help.

And last Use were to describe an even or omething that has  already happened or it is on the past,and use was only to the First and third person.

Ex.

you were late to the picnic.
was late to the morning class.
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2014-02-25T10:06:42+08:00
The word THERE is used to specify place or position 
The word THEIR is a pronoun used to specify ownership 
The word WHERE is used to ask place or position 
The word WERE is the past tense of the word ARE and it is plural form of the verb :> 
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