词汇运用
46. The machine is being _____▲______ by a robot instead of a worker (控制).
47. Earth is becoming more and more ____▲________and polluted (拥挤).
48. When people in power is ____▲______, people will do as they like(缺席的).
49. A train is going ____▲_______a tunnel(穿过).
50.The little boy____▲____ not to be late for school any more yesterday (允诺) .
51. On summer days, lying on the beach can be quite _____▲____ (relax).
52. The film, 1942 , directed by one of the most famous Chinese __▲____ got a success(direct).
53. For an _____▲_____ reason, Sam moved to Japan(know).
54. Green food means the food is_______▲_____ (harm).
55. All of us should know the______▲______ of protecting wild animals(important).