The little child _______ go home alone at night.
—Why did Miss Li resign from the present position so abruptly?—As far as I know, she _______ for higher wages, but was turned down in the end.
The conflict between economic development and environmental protection, if not appropriately _________, can cause disastrous consequences in daily life settings.
—Professor Smith, I’d like to take a gap year to Africa to serve in a global anti-Aids campaign.—Good idea, ______ you can afford the time.
Meeting again by chance, Lucy and Amy are delighted to _______ the friendship where it left out years ago.
David will succeed along the career ladder one day, I firmly believe, _______ he devote more energy to it.