问题
选择题
. Tracy has gone abroad for further study. It ____ be her. The girl you saw yesterday is her sister.
A．may
B．shouldn’t
C．must
D．can’t
答案
答案：D
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. Tracy has gone abroad for further study. It ____ be her. The girl you saw yesterday is her sister.
A．may
B．shouldn’t
C．must
D．can’t
答案：D