Why was Mr Lin late for the meeting this morning?

问题描述:

Why was Mr Lin late for the meeting this morning?
Because he didn't know().
A.when would the meeting start.
B.when the meeting would start.
C.when will the meeting start.

Why was Mr Lin late for the meeting this morning?
Because he didn't know (B.when the meeting would start).
为什么马先生今早开会迟到了?因为他不知会议几点开始.
括号中要填的是个宾语从句,要用陈述句的语序,即主语在动词之前.其他两项都是疑问语序,不能选.