Present Tense:
There is = for singular nouns/ There are = for plural nouns
Past Tense =
There was = for singular nouns/ There were = for plural nouns
Let's Practice Online: (many interactive links in each)
There is/ there are:
agendaweb.org/grammar/there-was-there-were-exercises.html
www.liveworksheets.com/search.asp?content=there+is%2C+there+are
www.grammar.cl/Games/There_is_There_are.htm
There is/ there are:
agendaweb.org/grammar/there-was-there-were-exercises.html
www.liveworksheets.com/search.asp?content=there+is%2C+there+are
www.grammar.cl/Games/There_is_There_are.htm