题目内容
句型转换
I think he is swimming in the river. (改为否定句)
I ________ ________ he is swimming in the river.
答案:don't;think
练习册系列答案
相关题目
题目内容
句型转换
I think he is swimming in the river. (改为否定句)
I ________ ________ he is swimming in the river.