【題目】He spent ________ time solving this problem.

A. a number of B. a great deal of

C. the number of D. many of

【答案】B

【解析】

句意:他花費(fèi)了一些時(shí)間解決這個(gè)問題。

a number of一些,修飾可數(shù)名詞;a great deal of很多,修飾不可數(shù)名詞;the number of……的數(shù)量;many很多,修飾可數(shù)名詞。此處修飾不可數(shù)名詞time,故用a great deal of,故選B。

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