He has homework to do every day. A. manyB. lotsC. lot ofD. a lot of

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A. many
B. lots
C. lot of
(答案→)D. a lot of
解析：这几个选项都表示多的意思。Many用在可数名词复数前表示许多；Lots一般不单独用，需和of搭配使用；Lot of说法错误；a lot of既可以修饰可数名词也可以修饰不可数名词，表示许多的意思。本题中homework为抽象名词，不可数，故选D。