题干

—You’re late again. We  for you since 8: 00 a. m. .
—Sorry. An unexpected visitor came to see me.
A.are waiting B.wait
C.waited D.have been waiting
上一题 下一题 0.64难度 单项选择 更新时间:2014-10-23 02:02:40

答案(点此获取答案解析)