单选题：How long may this book-------?A.be keepingB.keptC.be keptD.is_英语解答

单选题：How long may this book-------?
A.be keeping
B.kept
C.be kept
D.is kept

人气：398 ℃　时间：2020-04-03 19:42:32

解答

C
B缺谓语动词
被保存用被动
may后用动词原形