For the first time in his life, Yuka finished reading an entire book in English. - Por primera vez en su vida, Yuka terminó de leer un libro entero en inglés.
He wrote a book in China. - Él ha escrito un libro en China.
When you book into a hotel or when you book in, you officially state that you have arrived to stay there, usually by signing your name in a register. He was happy to book into the Royal Pavilion Hotel Today Mahoney booked himself into one of the best hotels in Sydney = check in, check into check out, check out of