用介词“in;at;on”填空。注意大小写。 1. We were____the greengrocer's ____Thursday. 2. Where were you ______a quarter to four. 3. I was ______Korea _____October. 4. Were you there ______summer? 5. _____December 25th. , we were _____China. 6. ______2009, there was a big race ______February.