（2015.湖北孝感）— How often do I need to feed the dog? — It ________ food every day, or it will be hungry.

题型：单选题题类：真题难易度：普通

— How often do I need to feed the dog? — It ________ food every day, or it will be hungry.

A、must give B、must be give C、must gave D、must be given

举一反三

Hands {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} before eating or you will easily get sick.

These flowers {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} every day, or they die.

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