问题
选择题
16．—Where is Lily, Lucy? I cannot find her anywhere.
—She_________have been off long. I saw her clean the window just now.
A．shouldn’t
B．can’t
C．mustn’t
D．needn’t
答案
答案：B
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16．—Where is Lily, Lucy? I cannot find her anywhere.
—She_________have been off long. I saw her clean the window just now.
A．shouldn’t
B．can’t
C．mustn’t
D．needn’t
答案：B