Across
- 2. Participate in math competitions
- 5. Learning math is not easy.
- 7. where did you go just now？
- 8. My sister can explain clearly.
- 9. It’s not easy to speak Mandarin.
Down
- 1. He hopes to participate in a math competition.
- 3. My sister is very good at math.
- 4. I don't understand what you are saying.
- 6. what did you just say?