问题详情：
改错：Robert's new book about space exploration is fantastic. You simply could read it.
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【回答】
could→should 句意：罗伯特写的关于太空探索的新书太好了，你应该读一读。根据句意可知应用should，故将could改为should。
知识点：虚拟语气
题型：短文改错
