The best way to explore _______ countryside is on _______foot.
—What’s the matter with Della?—Well, her parents wouldn’t allow her to go to the party but she still _______.
, the sun was rising in the east.
Across North China in the world, namely the Great Wall.
—Pity you missed the lecture on nuclear pollution.—I _______ it ,but I was busy preparing for a job interview.
The principal walked onto the platform and seated himself in a chair, _______ for answering questions.