my book has disappeared.who______have taken it?为什么填could,不填would?
问题描述:
my book has disappeared.who______have taken it?
为什么填could,不填would?
答
could表示可能
答
根据 my book has disappeared,
选 could ,说明书很可能拿走.
而would,说明书还在这儿.而不是 has disappeared