The workers are busy ____models for the exhibition.

  • Ato make
  • Bwith making
  • Cbeing making
  • Dmaking
参考答案: D
解题思路: 考点:非谓语动词。be busy +(in)+ 动名词,等同于be busy with + n.,表示忙于做某事……。句意:那些工人在忙着为展览会做模型。