Modal verbs

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Across
  1. 3. My parents say we ____watch TV after we've finished our homework.
  2. 4. You ____leave your door unlocked when you go out.
  3. 7. This is impossible! There ___ be a mistake.
  4. 8. They ___have filled the car with petrol before they set off.
Down
  1. 1. My motorbike broke down in the middle of nowhere, but luckily I___to fix it.
  2. 2. Jim___ have seen me because he walked past without saying hello.
  3. 5. You don't ____pick me up at the station. I can get a taxi.
  4. 6. It's very cold today. Do you think it_____snow later?