Grammar with explanation

After I.......... Done my homework, I slept.( After+ had +pp )

While we.............. sleeping, the phone rang. ( While+ was, were+ ing)

He.......... Already finished the report. ( He, she, it, مفرد + has)( I, they, we, you, جمع +have)

I............ Washed the car.

My brother was born........... Oman. (in + بلد ، تاريخ ، شهور ، فترات اليوم )