题目内容
—Is that Mary under the tree over there? —It her. She ____ abroad for a month.
A. must be , has been in B. mustn’t be , has gone
C. can’t be, has been D. can’t be , has gone to
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题目内容
—Is that Mary under the tree over there? —It her. She ____ abroad for a month.
A. must be , has been in B. mustn’t be , has gone
C. can’t be, has been D. can’t be , has gone to