23. I (am sometimes/ sometimes am/ are sometimes/ sometimes are) bored in the maths lessons.
  24. I had no idea about the dangers of tsunamis (A. as soon as/ B. while/ C. until/ D. after) I saw the film.
  25.  The tourists cleared up the beach (A. after/ B. before/ C. while/ D. till) they got back to the hotel.
  26. We sell cups of coffee from our stall at the farmers’ (A. market/ B. shop/ C. town/ D. city).
  27. It has a (A. price control/ B. price tag/ C. price war/ D. priceless) of more than $2,000.