问题描述：
_____you ______（have）lunch?Yes.When ______ you ______ （have） it?I ______ it at 12:00.
have had did have had
为什么第四个不填was having?不是有at 12:
第二个为什么不填have had?
have had did have had
为什么第四个不填was having?不是有at 12:
第二个为什么不填have had?
问题解答：
我来补答展开全文阅读