Answer Key

Pre-test

Choose the correct expression.
  1. Gunpowder  [was invented] by the Chinese.
  2. My uncle  [built] houses for thirty years.
  3. Please don't tell anyone that it was me who  [ate] the last cookie.
  4. Many arguments  [are caused] by bad communication.
  5. Ten thousand dollars  [was stolen] from the bank last night.
  6. I  [asked] my daughter if she had time to help us.
  7. This factory is very old. It  [was built] in 1895.
  8. All the filters  [are changed] twice a year.
  9. The work  [was done] by my assistant. I didn't do anything.
  10. The fire  [was started] by an electrical failure.