after they ---at school,it began to snowa had arrived b had reach_英语解答

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?

人气：129 ℃　时间：2020-01-30 19:47:36

解答

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