公共英语一级
单选题请根据以下内容回答题：
[A]want
[B]have
[C]know
[A]want
[B]have
[C]know
参考答案：B进入在线模考
考查动词用法。want想要；know知道；have to必须。填入[A]、[C]两项语法虽正确，但意思不符合逻辑。have to实际上是一个情态动词，用在此处含有警告或者忠告的意味。
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