【題目】My keys ________in my schoolbag. This set of keys _______ Alan’s.

A. are, are B. is, is

C. are, is D. is, are

【答案】C

【解析】試題分析：句意：我的鑰匙在我的書包里。這串鑰匙是Alan的。在主系表結(jié)構(gòu)中，第一人稱單數(shù)I 和am連用，復(fù)數(shù)及第二人稱和are連用，第三人稱單數(shù)及名詞的單數(shù)和is連用。第一個空的主語是復(fù)數(shù)，所以用are。a set of，一串···，作主語不看后面的名詞而是看set的數(shù)量，第二空是一串，故用系動詞is，故選C。

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