Ourgovernmenthastriedmanywaysto         thesmog(霧霾)pro...

問題詳情：

 Our government has tried many ways to          the smog (霧霾) problem.

    A. hang out          B. work out         C. hand out        D. bring out

【回答】

B

知識點：動詞和動詞短語

題型：選擇題