Fill in the blanks with the correct preposition, using "in", "at" or "on". (Điên giới từ thích hợp vào chỗ trống, sử dụng “in”, “ai”, “on 1. the morning 2. June 357 Christmas 4. 14:30 Monday afternoon 6. Tet 7. the moment 8. .... sunset 9. May 11......... summer 13........ 10........ the past 12...... birthday party Thursday 15............. 2nd September 1945 14............. lunch
