1 . Animal welfare activists are ________ (concern) about the treatment of circus animals. (所给词的适当形式填空)

2 . The meeting was concerned ________ reforms and everyone present was concerned ________ their own interests. (用适当的词填空)

3 . Nowadays people are concerned _______the enviornment. (用适当的词填空)

4 . _____________ (concern) about the safety of my property, I rushed home in spite of the heavy rain. (所给词的适当形式填空)

5 . The mother was concerned ________ their safety when they didn’t come back from school at the usual time. （用适当的词填空）

6 . He is __________ (concern) about his skin because it has started to become very oily, with lots of red spots. (所给词的适当形式填空)

7 . My parents were ____________ (concern) about my apparent lack of enthusiasm for study. (所给词的适当形式填空)

8 . Parents are ___________ (concern) about their children’s safety, diets and studies. (所给词的适当形式填空)

9 . Health experts are ________ (concern) about teenagers’ skipping meals. (所给词的适当形式填空)

10 . Parents are all ________ (concern) about their children. (所给词的适当形式填空)