29. ______ any concern about the matter, please feel free to contact us.
(A) Were you have
(B) If you have had
(C) Should you have
(D) That you have
詳解 (共 2 筆)
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用'should' 和 'have' 的...
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省略 if 的倒裝形式 若 if 子句中...
私人筆記 (共 1 筆)
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should 置於句首，而省略 if, ...
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