问题
选择题
It's ______ good idea to visit our old teachers on ______ Teachers' Day. [ ]
A. a; the
B. a; /
C. /; /
D. /; the
答案
B
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It's ______ good idea to visit our old teachers on ______ Teachers' Day. [ ]
A. a; the
B. a; /
C. /; /
D. /; the
B