Сделать в косвенную речь, начиная со слов I asked..
Если можно, то ещё время в скобочках:-​

I asked if you were reading a book (past continuous)

I asked if you had ever seen a famous person (past perfect)

I asked how long you had been playing that boardgame (past perfect continious)

1. I asked if you were reading any good books then. (Past Continuous)

2. I asked if you had ever seen any famous person. (Past Perfect)

3. I asked how long you had been playing this boardgame.(Past Perfect Continuous)