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Identifying Non-defining Adjective Clauses

Decide whether each sentence is good English or a mistake.
Click on the button beside the correct answer.

  1. Many students think the best way to meet their university's English requirements is to get a good score on the IELTS, who is the most popular test of English nowadays.
    1.   This is a mistake.
    2.   This is good English.
  2. There are sometimes bad dust storms in Beijing which is located in northern China.
    1.   This is good English.
    2.   This is a mistake.
  3. Maria, whose family comes from Portugal, can speak two languages.
    1.   This is a mistake.
    2.   This is good English.
  4. The car that I bought seats five people comfortably, which is necessary for a family like ours with three kids.
    1.   This is a mistake.
    2.   This is good English.
  5. I met his brother, who wife works in the Department of Agriculture.
    1.   This is good English.
    2.   This is a mistake.
  6. He rides a bike to work, means that his wife can use the car during the day.
    1.   It's good English.
    2.   It's a mistake.
  7. Christmas, for which I have the greatest affection, involves two things I love - family and food.
    1.   This is a mistake.
    2.   This is good English.
  8. The Statue of Liberty, which is located in New York Harbour, was a gift from France to the USA.
    1.   This is a mistake.
    2.   This is good English.
  9. The North Pole, that is covered with ice, is not actually a landmass.
    1.   This is a mistake.
    2.   This good English.
  10. Mexico City which is the fifth largest city in the world, has a population of about 22 million.
    1.   This is good English.
    2.   This is a mistake.