我这里有几个句子需要改成含有宾语从句的句子
1：When does the train arrive?Please tell me.
2:What is wrong with his new car?My friend wanted to know.
3:Have you decided?How will you.help the children in the poor area?
4:My friend asked me,"Do you help your parents with the housework on week-days?"
5:The sun rises in the east.I knew when I was very young.
6 He has had a cold for three dayd.He told me.