- 试题详情及答案解析
- People are very _____ about the problems ____ the environment.
| A．concerning; concerned | B．concerning; concerning |
| C．concerned; concerned | D．concerned; concerning |
- 答案：D
- 试题分析：句意：人们十分担忧关于环境的问题。be concerned about关心，担忧；concerning为介词，意为“关于”。故选D。
考点：考查形容词和介词