问题描述: 英语,时态 1个回答 分类:英语 2014-11-12 问题解答: 我来补答 前七题除第四都对4、will have run8、were-to visit9、discovered-was boiling10、is taking11、have studied12 、costs13、would like14、didn't give up trying15.is coming16.has gone 展开全文阅读