用 in,on ,at 填空(注意大小写)。 1. They will go to see you __(1)_____ a week. 2. I will go to Canada ___(2)____ summer. 3. What do you often do ____(3)___ noon? 4. He was born ___(4)____ May 10th, 1998. 5. You can see many stars in the sky ___(5)____ night. 6. I arrived in London ___(6)____ a rainy morning. 7. I usually get up ___(7)____ six o’clock ___(8)____ the morning. 8. They were happy ___(9)____ that time. 9. ___(10)____ the age of nine, the boy could swim well. 10. We often go to parks ___(11)____ Sundays.