At first the experiment went on well, but ______ problems we hadn’t expected turned up later and it failed.
The road conditions there turned out to be very good, ____ was more than we could expect.
All the neighbors admire this family, ____ the parents are treating their child like a friend.
The growing speed of a plant is influenced by a number of factors, ____ are beyond our control.
We went through a period______communications were very difficult in the rural areas.
For many cities in the world, there is no room to spread our further, _______ New York is an example.