(2013·安庆模拟)So far, what we have done is destroying the earth; only by changing we live we save it.
A. that; will
B. how; can
C. what; do
D. which; shall
网友回答
A. that; will
(答案→)B. how; can
C. what; do
D. which; shall
解析：选B。考查名词性从句和倒装。句意: 到目前为止, 我们的行为是在破坏地球, 只有我们改变了生活方式, 我们才能挽救它。live为不及物动词, 可排除C和D项。will表示将来和意愿, 根据句意应选B。