问题
选择题
It's 12 o'clock. Mary's family ______ their lunch. [ ]
A. eat
B. are eating
C. eating
D. to eat
答案
答案：B
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It's 12 o'clock. Mary's family ______ their lunch. [ ]
A. eat
B. are eating
C. eating
D. to eat
答案：B
