问题补充:
单选题Yoursonhaskept_________fortwohours.You’dbetteraskhimtohavearest.A.studyB.studiedC.to studyD.studying
答案:
D解析keep doing保持不间断地做某事 keep to do keep要求 -ing, 没有 to do 形式.故选D.
时间:2022-03-21 05:00:17
单选题Yoursonhaskept_________fortwohours.You’dbetteraskhimtohavearest.A.studyB.studiedC.to studyD.studying
D解析keep doing保持不间断地做某事 keep to do keep要求 -ing, 没有 to do 形式.故选D.
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