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        1. (   ) 1.1 think people should stop      trees, or the environment will become worse.

          A.  cut down

          B.   to cut down

          C.   cutting down

          D.  are cutting down

            l.C stop doing sth.意為"停止正在做的事";stop to do sth.意為"停下來(lái)去#S^—件事"。故選C。

          題目來(lái)源:仁愛(ài)英語(yǔ)同步練習(xí)簿九年級(jí)上下冊(cè) > Topic 3 What can we do at home to protect the environment?

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