50đ giúp với ạ, em cảm ơn trước ạ Ex 1: Điền những giới từ sau vào chỗ trống: In - On - At - X 26. _________ the moment, Im busy. 27. They were very popular __________ the 1980s. 28. My appointment is __________ Thursday morning. 29. We had the meeting _________ last week. 30. Are you staying at home ________ Christmas Day. 31. I was born ________ September 15th 32. _________ 8 oclock, I must leave. 33. I have English classes ______ Tuesdays. 34. Where were you ________ Monday evening? 35. The children like to go to the park ________ the morning. 36. Henrys birthday is ___________ November. 37. Miss White gets up early, she has breakfast ________ 6.00, then she goes to work ________ half past six 38. Justin Bieber was born __________ March 1st, 1994. 39. Leaves turn red, gold and brown _________ autumn. 40. My friends like to go the movies __________ Saturdays. 41. The pilgrims arrived in America _______ 1620. 42. My sister likes to watch TV ___________ the evening. 43. _______ Tuesday morning, there is a meeting_______8.00 44. I like to watch the parade ___________ Independence Day. 45. Hippies protested against the war _________ the 1960s. 46. We finished the marathon ________ the same time. 47. I have no time _____ the moment. 48. I shall see her _____ the beginning of the week. 49. Goodbye! See you _____ Monday. 50. We are going to the theatre_____ this evening