A strip's frame size usually varies to keep the readers interested. (改为一般疑问句) _________ a strip's fr...
2022-06-10 22:51:47 33次 上海市静安区2019-2020学年九年级上学期期末英语试卷 改写句子 反馈错误 加入收藏 正确率 : 100%
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?
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