题目内容
【题目】He _____ the tree as often as possible.
A. is watering B. water C. must water D. must be watered
【答案】C
【解析】句意：他必须尽可能经常给那棵树浇水。根据often可知此处用一般现在时，故排除AD两项，主语he是第三人称，与谓语water之间是主动关系，故谓语用第三人称单数waters，故排除B项。故选C。
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【题目】He _____ the tree as often as possible.
A. is watering B. water C. must water D. must be watered
【答案】C
【解析】句意：他必须尽可能经常给那棵树浇水。根据often可知此处用一般现在时，故排除AD两项，主语he是第三人称，与谓语water之间是主动关系，故谓语用第三人称单数waters，故排除B项。故选C。