Cover of the textbook Outcomes Pre-Intermediate - Student's Book

The key answer of exercise 8

The key to exercise solutions in chapter 11 - Did you know ...? for the textbook Outcomes Pre-Intermediate - Student's Book with authors Hugh Dellar and Andrew Walkley from National Geographic Learning

Question

Read the article below about a classic experiment. Choose the active or the passive form in 1-10.

Answer

  1. conducted
  2. were taken away
  3. were replaced
  4. was made
  5. spent
  6. were put
  7. explored
  8. weren’t touched
  9. are not allowed
  10. is seen