问题
选择题
"You can't have this football back ____ you promise not to kick it at my cat again," the old man said firmly. [ ]
A. because
B. since
C. when
D. until
答案
答案：D
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"You can't have this football back ____ you promise not to kick it at my cat again," the old man said firmly. [ ]
A. because
B. since
C. when
D. until
答案：D