问题
选择题
All the runners got ready to run, _____? [ ]
A. don't the runners
B. don't they
C. didn't the runners
D. didn't they
答案
答案：D
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All the runners got ready to run, _____? [ ]
A. don't the runners
B. don't they
C. didn't the runners
D. didn't they
答案：D
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