When a holiday es, tickets are not easy to get．You must book one ________, one or two weeks ahead of time, for example．
A.in advance
B.in time
C.in a hurry
D.in need
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A解析本题考查非动词短语辩义。从句意可知：到放假的时候，车票必然难买，所以要预订。in advance“预先”；in time“及时”；in a hurry“匆匆地”；in need“需要”，结合句意，选择A项。