39. How about __ a film?A.see B. to see C. seeing D. to seeing 40. Always look ____ where you go. A. Carelessly B. careful C. careless D. carefully 41. I _________ a tricycle when I was a child. A. used to ride B. use to ride C. used to riding D. used ride 42. The highlight of the Rio Carnival is the Samba Parade with thousands of samba _______ from various samba schools. A. perform B. performers C. performance D. performer 43. How do you think about my new book? – I find it_______. A. excited B. excite C. excitingly D. exciting 44. They canceled the match________it rained heavily. A. because of B. because C. although D. in spite of 45. The central square is_________. It is full of people and noise. A. quiet B. peaceful C. crowded D. calm 46. Critics say the film is very _______. 47. A. frighten B. frightening C. frightened D. fright 48. Always _______ your seatbelt when you drive. A. fasten B. tide C. widen D. bring 49. _______ if you feel tired or after you drink alcohol. A. Don’t drive B. Drive C. Don’t do D. Do 50. People __protect rare animals. A. has to B. shouldn’t C. should D. mustn’t