B
又如：
We often go carolling at Christmas.我们在圣诞节常去唱颂歌.
We’re having the roof repaired at Easter.我们要在复活节期间找人把房顶修一修.
Some children make lanterns out of pumpkins at Hallowe’en.有些儿童在万圣节前夕用南瓜做灯笼.