“Well done, John! Not a single mistake____in your exam paper this time!”said the teacher．

So absorbed          in our talk that my brother took a wrong turn on the way to the airport.

—Did you enjoy reading that novel?—Yes, _______such an interesting novel.

--- What' s the matter with Della?--- Well, her parents wouldn't allow her to go to the party, but she still __

_________ are the days when teachers punished students for minor offenses, being late for school, for example.