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Today, we’ll discuss a number of cases __________ beginners of English fail to use the language properly.
A．whichB．a(chǎn)s
C．whyD．where
D。
where在此引導(dǎo)定語從句，修飾先行詞cases，where的意思相當(dāng)于in which。類例：There are cases where the word “mighty” is used as an adverb. 在一些情況下，mighty一詞可用作副詞。
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