In our school library there a number of books on science and the number of them growing larger and larger.

题型：单选题题类：常考题难易度：普通

A、is , are B、are , is C、has , is D、have , are

举一反三

点拨：动名词或动名词短语可以作句子的主语。多数情况下，动名词作主语的句子也可改为动名词作表语的句子。上句可改为：One way to help pandas is teaching children.

再如：吃太多对你的健康不好。 {#blank#}1{#/blank#}

收集邮票是他的爱好。 {#blank#}2{#/blank#}

He {#blank#}1{#/blank#} got two cups of {#blank#}2{#/blank#}.

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