crossword - Yichen -6C

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Across
  1. 2. Required by law or a rule; mandatory.
  2. 5. power or skill that is needed to do something.
  3. 7. A substance that is obtained by or used in a chemical process.timetable: A chart showing the days and hours when specific events or classes take place.
  4. 8. A secret word or phrase that you must use to log in to a system
  5. 9. A chart showing the days and hours when specific events or classes take place.
  6. 10. The flat surface on a computer or television which shows images
Down
  1. 1. A person who is in the same class as you at school.
  2. 3. The study of numbers, shapes, and space
  3. 4. An outdoor area where children can play.
  4. 6. To watch or notice something carefully.