- Lucy Bella Earl has devised 10 questions that will test your grammar knowledge
- Questions are on everything from possessive pronouns to relative clauses
- According to grammar expert Lucy, just 10 out of 1,000 scored top marks
- The marketing graduate's videos are watched by 20 million students every year
It's A-level results day and thousands of students across the country will be waiting to see how they fared in the most important exams of their lives.
But just one per cent of people will score top marks in this fiendish grammar quiz, according to the teacher who created it.
Lucy Bella Earl, who launched hit YouTube channel English with Lucy, has devised 10 questions that will put your grammar knowledge to the test.
The 24-year-old marketing graduate, from Bedfordshire, makes videos that are watched by 20 million students every year and claims just 10 out of 1,000 managed to score top marks on her latest test.
So do you know your possessive pronouns from your relative clauses? Scroll down for the answers...