after they ---at school,it began to snowa had arrived b had reached c arrived d reached选什么 为什么 可以把after的用法 通俗的 讲讲?
问题描述:
after they ---at school,it began to snow
a had arrived b had reached c arrived d reached
选什么 为什么 可以把after的用法 通俗的 讲讲?
答
arrive at 是一个表示到达的短语不能分开 答案在AC中选 看题目逗号后面的句子是过去时态 因此前面的句子应该是过去完成时,表示在过去发生的 因此选A