B4

‘Harry Potter’ is a series of seven fantasy novels written by the British author J. K. Rowling. The main storyline concerns Harry’s quest to overcome the evil dark wizard Lord Voldemort.
(present simple, т.к. это общая информация.)

CONCERN

B5

Since the release of the first novel ‘Harry Potter and the Philosopher’s Stone’, the books has gained immense popularity and commercial success worldwide.
(present perfect, т.к. действие ещё не закончилось. Книга уже получила популярность и продолжает это делать.)

GAIN  

B6

The series has been translated into 67 languages, including Russian.
(present perfect passive, т.к. действие не закончилось. Сериал переведён и продолжает переводиться.)

TRANSLATE

B7

By 2010, the first six books had been made into films by Warner Bros.
(past perfect passive, т.к. к определённому действию в прошлом другое действие (полностью) завершилось)

MAKE

B8

The films are popular among people of all ages. It is the highest grossing film series of all time.
(степень сравнения)

HIGH 

B9

The seventh book was split into two films. Part 1 was released on 19 November 2010 and the series finale was on 15 July 2011.
(седьмой)

SEVEN

B10

Fans packed Trafalgar Square in London for the premiere of Part II, where for the first time J.K. Rowling said that she might one day pen another book in the best-selling series.
(предположение)

MAY