They sold ______ boxes of such sweets last week.

A．four dozens ofB．four dozenC．four dozen ofD．four dozens

B

解析試題分析：考查數(shù)詞的用法：dozen“二十”，前有數(shù)字時不加s,也不加of，用dozens of的時候dozen必須加s.表示“很多”，句意：上個星期，他們買了80盒這樣的糖果。選B。
考點(diǎn)：考查數(shù)詞
點(diǎn)評：一般情況下several或基數(shù)詞后都用名詞復(fù)數(shù)，但hundred，thousand，dozen，score這樣的詞，有具體數(shù)字修飾時，不能用復(fù)數(shù)，而加of時，就用復(fù)數(shù)。表示“許多”。

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