---I think Helen is at home.---No, she be at home, for she phoned me from the airport just five minutes ago.
After the earthquake, the first thing the local government did was to provide for the homeless families.
________ this cake, you'll need 2 eggs, 175 g sugar and 175 g flour.
Although the causes of cancer ________, we do not yet have any practical way to prevent it.
Someone who lacks staying power and perseverance is unlikely to _________ a good researcher.
They _________ two free tickets to Canada, otherwise they'd never have been able to afford to go.