题型：单选题题类：常考题难易度：容易

—What should I do ,doctor?
— ___healthy, you should take more exercise.

A、To keep B、Keep C、Keeping D、Kept

举一反三

The mother {#blank#}1{#/blank#} her son {#blank#}2{#/blank#} {#blank#}3{#/blank#} read in the bed.

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