41. People are using a lot of plastic bags everyday; ………………., the amount of waste has kept increasing. A. however B. therefore C. so D. although 42. Scotland is very famous ……………, its rich culture as well as unique natural beauty. A. for B. about C. because ( vì chỗ này có dấu , nên chọn because ) D. in 43. People consume a lot of contaminated food. It ……………….many health problems. A. leads in B. leads to C. results to D. results from 44. If more people ………………. public transport, it reduce traffic jam and air pollution. A. use-will B. used -will C. used-would D. use-would 45. You shouldn’t fiddle your ………………., when you speak to someone. A. head B. nose C. hair D. shoulder 46. California ………………., the most iconic theme park in the world. A. had B. has had C. have D. has 47. The ash of volcanic eruption ………………., be good for growing plants. A. will B. may C. might D. both B & C 48. Most European citizen ………………., to apply for a visa to visit Canada. A. doesn’t have B. don’t have C. didn’t have D. hadn’t have 49. Dave fancy …… 49. Dave fancy ………………., non-fiction movies with his friends. A. to watch B. watching C. be watched D. being watched 50. The teacher told me not hesitate ………………., her if I had some questions. A. asking B. to ask C. being asked D. to be asked - giải thích chi tiết giúp tớ tại sao lại chọn câu A/B/C/D và lý do không chọn các câu kia nha :33. - Hứa vote đủ.