Ourclassmates________doingtheirhome

发布时间：2020-07-27 05:24:23

Our classmates ________ doing their homework in the classroom after school．A.used toB.use toC.are used toD.to be used to

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C解析“过去习惯做某事”用used to do…，而“平时习惯做某事”通常用be(get, bee)used to doing…本句有时态变化，例如：have got used to doing, were used to doing等．
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