Выберите правильный вариант косвенной речи:

1. The lecture said, "Secondary education lasts 11 years in Russia."
a) The lecturer said that secondary education lasts 11 years in Russia.
b) The lecturer said that secondary education lasted 11 years in Russia.

2. He said, "Secondary education is compulsory."
a) He said that secondary education was compulsory.
b) He said that secondary education is compulsory.

3. He added," It consists of three levels."
a) He added that it consisted of three levels.
b) He added that it consists of three levels.

4. The lecturer said, "The first level startsat the age of seven orsix."
a) The lecturersaid that the first level started at the age of seven or six.
b) The lecturersaid that the first level starts at the age of seven or six.

5. He explained, "The school year begins on September 1 and ends in May."
a) He explained that the school year begins on September 1 and ended in May.
b) He explained that the school year began on September 1 and ended in May.