Nowadays people are more concerned about the environment ________ they live.
We should not let our grandparents who are too old and weak ________ alone.
The bank, whose walls are painted white, ________a safe and reliable place.
All the neighbors admire this family, ________ the parents are treating their child like a friend.
We have just heard a warning on the radio ________ an earthquake is likely to strike that area again.
Stand over there ________ you’ll be able to see it better.