Mrrs. Ngoc asked her son if he had gone climbing the day before
My brother said to his best friend that if my brother had been him, he would have been patient in that situation
The teacher wonder if that student understood the lesson completely
The customer told me if I could speak E or French
The police asks the witness what he/ she is doing there
Jim asked Laurence how many students there were in her classroom that year
Ngoan said what Mr.Minh had been doing at that time the day before