优题课 - 聚名师,上好课(www.youtike.com)
  首页 / 试题 / 初中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:2108

Tony is busy _______ his homework.

A.doing B.do C.to do D.does
登录免费查看答案和解析

Tonyisbusyhishomework.A.doingB