Gaining the knowledge ________ environmental protection will help you to become a qualified environmentalist.

He told me that in the following days there were other changes, even more _________.

Would it be ______ for you to pick me up at four o’clock and take me to the airport?

The chairman said in the meeting that he would be ________ towards all opinions and consider them seriously.

Recently our government policymakers are very _______about the rapidly rising food costs.