You can choose _____ book you like among these.
In the middle of the forest ________, in which we often went fishing when I was a little child.
So absorbed ________ in our talk that my brother took a wrong turn on the way to the airport.
Not until he went abroad for further study ________ how attached he was to his parents.
It was during the Ming Dynasty ________ the Great Wall was repaired and extended to take on the appearance it has today.
—Are you pleased with what he has done?—Not a bit. It couldn't be________.