The rise in electricity costs has _______ our difficulties in carrying out the project.
—Will you come?—________you promise not to invite Mary.
They ________ to enter the building by the back door; however, the front door was locked.
He _________his friend in the crowd at the first sight and called out his name.
Used to TV shows, ________ everything is quick and entertaining, many people do not have the patience to read a book that requires thinking.
According to the government, the new tax law will not ________until next month.