Scientists spent many years and worked hard to invent TV. (complex)

Keep practicing — related questions

• It was not invented over night. (Active)
• Scientists are often creative in ------- experiments.
• Television was invented by
• The programs telecast by television are very interesting. ( Complex)
• The credit of inventing the television goes to
• The credit of inventing the television goes to
• The credit of inventing the television goes to
• The credit of inventing the Television goes to