—Mary knows so much about .earth! —Yes,
问题:
—Mary knows so much about . earth!
—Yes, you know she is only . eight-year-old girl.
A.the; a
B.an; an
C.the; an
D.an; a
—Mary knows so much about . earth!
—Yes, you know she is only . eight-year-old girl.
A.the; a
B.an; an
C.the; an
D.an; a