Complete each sentence with the correct form of the word given in brackets. Then press "Check" to mark your answers.
  1. We have been (patron) this restaurant for years and have become friends with the owners.
  2. The doctor (rotate) the patient's shoulder to determine if there was any injury to the joint.
  3. Why don't you go lie down for a while in the living room where you won't be (disturb)?
  4. We have (slash) prices by up to 50% for our yearly sales.
  5. Your father has an (enlarge) liver, though we're not sure why at this point.
  6. Halley's comet, one of the most famous ever known, returns to Earth every 76 years and has been (observe) and recorded for more than 3,000 years.
  7. My parents have taken in a couple of (lodge) to help them cover the cost of their mortgage.
  8. The Prime Minister seemed unsure of himself and (stumble) over his answers when questioned by the press.
  9. Colombia is the world's largest (cultivator) of coca, which is used to make cocaine.
  10. Why are you always so (negate); can't you look at the bright side for once?