问题描述：
把以下的句子改成than引导的比较状语从句
the service charge is 10 per cent in this restaurant ,but it is 15 per cent in that restaurant
第一句：the taxi driver expected me to give him 50 pence as a tip ,but Ionly gave him 30 pence.
第二句：we were pleased with the food ,but we were displeased with th service
第三句：Mary goes on holiday twice a year ,but Julia goes on holiday only once a year
the service charge is 10 per cent in this restaurant ,but it is 15 per cent in that restaurant
第一句：the taxi driver expected me to give him 50 pence as a tip ,but Ionly gave him 30 pence.
第二句：we were pleased with the food ,but we were displeased with th service
第三句：Mary goes on holiday twice a year ,but Julia goes on holiday only once a year
问题解答：
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