问题
选择题
—Look! What's that moving high up in ________ sky?
—It must be _________ plane. [ ]
A. a; the
B. the; /
C. the; a
D. /; a
答案
答案：C
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—Look! What's that moving high up in ________ sky?
—It must be _________ plane. [ ]
A. a; the
B. the; /
C. the; a
D. /; a
答案：C