21.19. My nephew is doing his homework ______ the moment. (1 Point) A. for B. at C. in D. during 22.20. Everything happened ______ the same time. (1 Point) A. on B. in C. at D. under 23.21. The game show will not be ______ TV this week. (1 Point) A. over B. in C. for D. on 24.22. I'll see you ______ a moment. (1 Point) A. at B. in C. around D. with 25.23. Look ______ him, he is singing! (1 Point) A. at B. in C. around D. with 26.24. I usually exercise ______ 15 minutes before having breakfast. (1 Point) A. under B. with C. on D. for 27.25. My grandfather lives ______ the sea. (1 Point) A. at B. by C. under D. near to 28.26.There is someone ______ the door. (1 Point) A. on B. at C. over D. in 29.27. This is a comfortable flat ______ us ______ live in. (1 Point) A. for - for B. from - to C. for - to D. with - to 30.28. Jennie smiled brightly ______ him, giving him butterflies in his stomach. (1 Point) A. at B. on C. over D. in 31.29. He has been absent ______ Monday. (1 Point) A. for B. since C. around D. on 32.30. She has made up her mind to stay ______ home ______ Christmas Day. (1 Point) A. at - on B. in - on C. at - at D. in - on 33.31. I was chatting ______ my colleague ______ lunchtime. (1 Point) A. with - in B. about - in C. with - at D. on - at 34.32. I had chicken salad and a glass ______ orange juice ______ dinner. (1 Point) A. of - in B. with - for C. of - for D. with - at 35.33. This town was very popular ______ tourists ______ the 1980s. (1 Point) A. with - out B. with - in C. with - on D. for - in 36.34. Write it ______ the paper, ______ the top of the page. (1 Point) A. on - at B. in - at C. on - in D. in - on 37.35. The train arrives ______ Chicago ______ ten o'clock. (1 Point) A. at/in B. near /at C. in/at D. from/on 38.36. There is a masterpiece hung ______ the wall ______ the window. (1 Point) A. in - above B. on - opposite C. on - between D. above - near 39.37. The bank is ______ the supermarket. (1 Point) A. next B. above C. opposite D. between 40.38.She likes to go ______ a picnic. (1 Point) A. for B. on C. in D. over 41.39. Everybody, let’s have a toast ______ his success. (1 Point) A. in B. with C. to D. for 42.40. There was a loud noise which startled everyone ______ midnight. (1 Point) A. in B. through C. at D. for 43.41. I usually go to my parents' house ______ Christmas. We eat turkey together ______ Christmas Eve. (1 Point) A. at - in B. in - on C. at - on D. in - in 44.42. Firework display is a common ways of celebration ______ Lunar New Year’s Eve ______ Vietnam. (1 Point) A. on - in B. at - in C. on - at D. in -in 45.43. Take the next road ______ the left, then you will arrive ______ a pharmacy. (1 Point) A. on - at B. to - in C. in - at D. in - to 46.44. My cat is very fond _______ fish. (1 Point) A. with B. in C. of D. to 47.45. There is a skyscraper ______ the city’s square and the amusement park. (1 Point) A. on B. between C. among D. from 48.46. It's better to travel ______ taxi if you are alone ______ night. (1 Point) A. by - at B. in - on C. in - at D. by - on 49.47. I’m grateful ________ her _______ her help. (1 Point) A. to/for B. to/from C. at/for D. with/ for 50.48. There is a new shopping center opening ______ the corner of this street. (1 Point) A. from B. at C. over D. in 51.49. ______ the most part, his explanations are quite easy to understand. (1 Point) A. For B. In C. Through D. By 52.50. ______ the ocean, corals are at risk from rising sea temperatures (1 Point) A. In B. From C. At D. On