题目

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 _____▲_____ reaso1．-Do you know the girl        is talking with our teacher？-Oh，she is my sister．（　　）A．whoB．whoseC．whomD．where