問題詳情
2. That the legal drinking age ________ lowered is a hot topic for debate in many states of the US.
(A) should have
(B) should
(C) should be
(D) which should
(E) which should have
(A) should have
(B) should
(C) should be
(D) which should
(E) which should have
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無參考答案
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