问题描述：
选择：
翻译：
Not until he finished his homework () him to watch TVin the evening.
A his mother allowed
B his mother had aoolwed
C did his mother allow
D had his mother allowed
为什么选它?
翻译：
Not until he finished his homework () him to watch TVin the evening.
A his mother allowed
B his mother had aoolwed
C did his mother allow
D had his mother allowed
为什么选它?
问题解答：
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