用 “in”, “on”, “at”或 “” 填空。1. When is your birthday? My birthday is _ January.2. What present did you get _ your birthday? I got a skateboard.3. Class begins _ 7:30 every day. And ends _ about 4:30 _ the afternoon.4. What are you going to do _next month? Im going to visit Tibet.5. How are you _ these days? Fine.6. New Years Day is coming. What will your family do _ that day?7. What do people usually do _ Spring Festival? They visit their relatives.8. What did you do _ last weekend? I played games with my little brother.9. I will be back _ three hours.10. Tom sometimes visits his Chinese friends _ Sundays.11. Sam has to get up very early _ tomorrow morning.12. I love to have parties at school _ Childrens Day. 13. We dressed up in costumes and had a big party by the campfire _ last Halloween.14. We have no English lessons _ Tuesday.15. All of us went to the cinema _ the day before yesterday.1. in2. on3. at, at, in4. /5. /6. /7. at8. /9. in10. on11. /12. on13. /14. on15. /