be 动词 (用be动词的正确形式填空)---How much ____ the exercise book and the magazine?----That _____ ninety dollars.

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be 动词 (用be动词的正确形式填空)
---How much ____ the exercise book and the magazine?----That _____ ninety dollars.

are is
前一个的对象为书和杂志 所以为复数 后一个主语为价格 所以为单数

are
is