Let us hope we can settle the matter without _____ more trouble.
This photo of mine was taken __________ stood the famous twin-tower before the 9.11 event.
Though they met for the first time, they talked __________ they were good friends.
The medicine works more effectively __________ you drink some hot water after taking it.
It will be a long time __________ we finally solve the problem of pollution.
It was five o'clock in the afternoon __________ they climbed up to the top of the mountain.