20. --- I think the waiter has forgotten us. We ________ here for over half an hour!
--- I think you’re right. He probably thinks we have already ordered.
A. are waiting B. have been waiting
C. have waited D. will wait
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com