Cover of the textbook Performer B1 Phases, Vol. 1

The key answer of exercise 5

The key to exercise solutions in chapter 12 - Presentation and Practice 1 for the textbook Performer B1 Phases, Vol. 1 with authors M. Spiazzi, M. Tavella, M. Layton, E. Fiordiliso from Zanichelli

Question

Choose the correct alternative.

Answer

  1. must
  2. must
  3. have to
  4. have to
  5. have to
  6. must
  7. have to
  8. must
  9. have to
  10. have to