Underline the correct relative pronoun or adverb. Sometimes both are possible. Cross both out in case they can be omitted. Thomas Edison was one of the best-known inventors of the early electrical age. He was a person which / whose numerous inventions made him a giant public figure around the world at the turn of the 20th century. The first practical long-lasting light bulb and the phonograph are among his most famous inventions. The phonograph (or a record player) is a device for reproducing sound which / that has been recorded as a spiral groove on a disk. This disk is known as a phonograph record, or simply a record. In using a record player, a record is placed on the player's turnable — a device that / which rotates the record.

• Thomas Edison was one of the best-known inventors of the early electrical age. He was a person which / whose numerous inventions made him a giant public figure around the world at the turn of the 20th century. The first practical long-lasting light bulb and the phonograph are among his most famous inventions.
  • Разбираемся: Местоимение "whose" указывает на принадлежность (чьи изобретения), что подходит по смыслу.
• The phonograph (or a record player) is a device for reproducing sound which / that has been recorded as a spiral groove on a disk. This disk is known as a phonograph record, or simply a record.
  • Разбираемся: В данном случае оба местоимения взаимозаменяемы, но "that" можно опустить.
• In using a record player, a record is placed on the player's turntable — a device that / which rotates the record.
  • Разбираемся: Местоимение "which" относится к неодушевленному предмету (device).

Ответ: whose; which / that; which / that