__________ with a difficult situation, Arnold decided to ask his boss for advice.
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________.
The murderer, together with his two brothers, ________ sentenced to death just now.