45. All of us enjoy _______ to classical music. A. listen B. listens C. listening D. listened 46. She worked very hard, _______she passed all her exams. A. because B. and C. so D. but 47. Hoa looks red. She was outdoors yesterday. Perhaps she has _______ A. flu B. sunburn C. spots D. stomachache 47. My family has decided to use _________ electricity by using more solar energy instead. A. more B. less C. much D. fewer 48. You like playing monopoly or chess, your hobby may be _______. A. collecting things B. playing sports C. dancing D. board games 49. Will you ………….making models in the future? A. pick up B. look for C. take up D. find 50. His parents are always proud ............. him ? A. about B. of C. on D. with 51. Have you ever……………to Sa Pa? A. goes B. be C. go D. been 52. I like watching TV ……….. it’s entertaining and educational. A. so B. but C. although D. because 53. It's good to____ blood because you can save people's lives.