把下列个句合并成含有宾语从句的复合句．
1.What time will they show their tickets?Do you knoww?
Do you konw ___ ___ ___ ___ show their tickets?
2.How can we get to the station?I don‘t know.
I don‘t know ___ ___ ___ get to the station.
3.She will leave a message on the teacher‘s desk .Lily says.
Lily says ___ she ___leave a message on the teacher‘s desk.