第29题: [单项选择]Only recently_________ to deal with the environmental problems. A. something has done B. has something done C. has something been done D. something has been done 参考答案:C 答案解析:本题考查倒装句的用法。Only+副词或状语放在句首,句子倒装。如:Only in this way can we work out the politics problem只有用这种方法,我们才能解出