问题描述: If you hear ___(介词)your friend ,you should write __(介词)time.应该填什么 1个回答 分类:英语 2014-11-01 问题解答: 我来补答 If you hear from (介词)your friend ,you should write in (介词)time.hear from :收到来信in time :及时 展开全文阅读