---Anumberofvolunteers     willingtoteachinChina’srural...

問題詳情：

---A number of volunteers      willing to teach in China’s rural areas.

  --- The number is getting      .

  ; bigger and bigger  ;bigger and bigger 

 ;more and more       ;more and more

【回答】

B

知識點：相似 相近詞比較

題型：選擇題