-Look! The old man _______ a big box into the house.
          -let's go and help him.

  • A pulls
  • B pulled
  • C is pulling
  • D has pulled
参考答案: A
解题思路: 句意:看,那个老人正在把箱子推进房子里。让我们去帮他吧。根据句意,用现在进行时be+动词ing形式,故选C。>>>立即刷题