______ tablet computers like Apple’s iPad just before bed, a researcher says recently, can lead to a...
2022-11-11 13:59:08 38次 2014-2015学年江苏宿迁剑桥国际学校高二上期中英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
______ tablet computers like Apple’s iPad just before bed, a researcher says recently, can lead to a poor night’s sleep.
A. Using B. Used C. To use D. Use
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