题目内容

Our bad living habits will destroy the earth. Only by changing      we live 
       save the earth.
A．what; can weB．how; can weC．where; we canD．how, we can
B
本题考查倒装结构。Only + 介词短语 + 倒装结构。how we live我们的生活方式。句意：我们坏的生活习惯将毁灭我们的地球，只有通过改变我们的生活方式才能拯救地球。
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