题目内容
A strip's frame size usually varies to keep the readers interested. (改为一般疑问句)
_________ a strip's frame size usually _________ to keep the readers interested?
练习册系列答案
相关题目
题目内容
A strip's frame size usually varies to keep the readers interested. (改为一般疑问句)
_________ a strip's frame size usually _________ to keep the readers interested?