We must show concern ______ each other.
With the project of animal protection, foxes are becoming more ________ in urban areas.
Food safety is ________ important, so the government spares no efforts to prevent food pollution.
Don’t be so discouraged. If you ________ such feelings, you will do better next time.
Modern forms of transportation and communication have done much to ________the isolation of life in Alaska.
There was a big hole in the road which ________ the traffic.