---When shall we meet your cousin at the station? ---His plane took off 2 hours ago, and it _________ arrive at 5pm.
_____ the mountain flood, the old woman insisted _____ remaining in her house.
The wounded soldiers were _____ danger, because we had run _____ medicine.
The workers and technicians worked hard _____ to get the Great Hall finished before National Day.
She turned ______ the pages quickly _____ a practiced hand.
The roads are lined _____trees, which have been planted to hold _____the strong winds from the north.