14．根据句子意思，从方框中选用恰当的词或短语填空．
46．The children were afraid ofgetting lost while going through the forest．
47．It's necessary for us to help the peoplein need．
48．His brotheris crazy about listening to music and he can sing lots of songs．
49．Bobused to go to school on foot．But now he takes the school bus．
50．The professor （教授） worked very hardthroughout his teaching career．
51．I feel too tired．Iwould rather stay at home．
52．Sorry for being late．But there'sa lot of traffic in the street．
53．Timmy isso patient that we all like to ask him for help when we are in trouble．
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| in need，is crazy about，would rather，used to，very kind，a lot of traffic，throughout， getting lost，so patient |
47．It's necessary for us to help the peoplein need．
48．His brotheris crazy about listening to music and he can sing lots of songs．
49．Bobused to go to school on foot．But now he takes the school bus．
50．The professor （教授） worked very hardthroughout his teaching career．
51．I feel too tired．Iwould rather stay at home．
52．Sorry for being late．But there'sa lot of traffic in the street．
53．Timmy isso patient that we all like to ask him for help when we are in trouble．