USED TO - WOULD GAME

Unit 33: used to and would (fill in the blanks)

Gap-fill exercise

  

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

How did European explorers in the fifteenth century to find find their way at sea? They use to have radar or GPS devices to help them. Ship's captains make their own maps and pass them on to each other. But these maps didn't to be very reliable. On his voyage to the New World, Columbus to measure his speed and distance every day to work out where he was. Other sailors the sun and the stars to guide them, but they often make errors in their calculations. They frequently to sail miles off course. It wasn't until the eighteenth century that Europeans developed an accurate way to measure their location at sea.