4) Report the sentences: a) The teacher said : ”M. Eminescu was born in 1850.”
b) My friends said : ’’My parents were born in Odessa.”
c) Ann said :’’Belfast is the capital of Northern Ireland.”

2 и 6 будут Past indefinite 
Остальные ,соответственно,- Present Perfect
I have built a house.
I have built a house when he came out of school
I have never built houses
I haven't built a house
Have you ever built a tower?
We built a house today
I have not yet learned words
We haven't made tutorials
They have never seen a crocodile
They haven't seen yesterday the crocodile

Так. На заметку.
Время Present Perfect обозначает действие, которое завершилось к настоящему моменту или завершено в период настоящего времени

Время Past Simple(indefinite) используется для обозначения действия, которое произошло в определенное время в и время совершения которого уже истекло

My favorite football-player is Ronaldo (Ronaldo Luís Nazário de Lima). Many people don't like him, but I adore. He was born in Rio (Brazil). He hadn't got any money, but he wanted to play football. When he was sixteen he started playing in "Cruzeiro", then he went to the World Cup in USA. Then he played in "Barcelona", then he went to Milan and played in "Inter".Later he signed one of the biggest contract with "Real" Madrid and finished his career in "Corinthians" in February 2011. He is widely considered by experts and fans as one of the greatest football players of all time. He won his first Ballon d'Or as the European Footballer of the Year in 1997 (aged only 21) and again won the award in 2002 (26 years old). Additionally, he is one of only three men to have won the FIFA Player of the Year award three times, along with French footballer Zinedine Zidane and Argentine striker Lionel Messi. He was the best football-player in Europe. Now he has a very beautiful wife and son.