--- Better get down to your work, Jack.--- _____.
Compared with the nature forces, our power was so weak that all our efforts to save our homes from the earthquake were __________.
They rented the old house on the __________ that the landlord would paint it.
The notice came around two in the afternoon __________ the meeting would be postponed.
Evidence has been found through years of study __________ children's early sleeping problems are likely to continue when they grow up.
(2009·重庆) We should consider the students' request __________ the school library provide more books on popular science.