(2012年江苏南通九校联考)When ________different cultures,we often pay attention only to the differences without noticing many similarities.
47. Although he 's wealthy,he spends_____________ on clothes.
48. They were all tired, but _____ of them would stop to take a rest.
49. I don’t know whether small oranges are sweeter than big ______.
50. When they met, they stopped and said hello to_______.
51. After everyone took_______ place, the meeting began.