that is the time ___he arrives.A when B that C

问题描述:

that is the time ___he arrives.A when B that C
D AorBorC.(为什么选D

C木有选项啊that is the time和he arrives都是句子。when和that都可以作为引导词连接。这个句子是宾语从句是不填。that可以省略,所以可以不填