将括号内的单词,更换一个字母,组成新词填在横线上使句意完整.(thank)I_____it's mine.(that)_____is this?

问题描述:

将括号内的单词,更换一个字母,组成新词填在横线上使句意完整.
(thank)I_____it's mine.
(that)_____is this?

think
what

think, What

(thank)I think it's mine.
(that)What is this?