Согласование времён!When did she decide go to shopping?-He asked when she had gone shoppihg(example). То есть надо поставить конструкцию He asked , а потом вопросительное слово и использовать согласование времён! 
1. Why did he decid to go to Ethiopia?
2/ What is shown in this dram?
3. Who will fulfill this task?
4.How long has she been stayihg here?
5. Who was  he speaking to when i came tip to him?
6. Who will play the role of Gamlet?
7. What is shown in this diagram? 
8. What is he going to do on Sunday?
9/ How long have they been developihg this project?
10. Why as this book written by? 

He asked why he had decided to go to EthiopiaHe asked what was shown in this dramHe asked who would fulfill that taskHe asked how long she had been staying thereHe asked who he was speaking to when I had came tip to himHe asked what was shown in that diagramHe asked what he was going to do on Sunday He asked how long they had been developing that project He asked why that book was written by