[題目] 請教名詞子句

[cutedavid (￾ ￾ ￾ N￾ ￾N )]

In 1942, the Italian explorer Christopher Columbus actually did not arrive in________is now the United States of America.

A.which
B.that
C.what
D.where

答案是c.
請問為什麼不是where?
還請前背解答！謝謝！


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推 bnb19009    :我覺得應該是形容詞子句前沒有先行詞，所以選what
推 leadfree    :where 改成 a place where 就可以了
→ SHANOLINDA  :口訣:where+S+V
→ SHANOLINDA  :in which表地方等於where
推 tinsly      :where是副詞 不能當主詞
推 kickyjump   :是因為U.S.A是一個國家而不是一個地點吧
→ lovehan     :因為缺主詞...