Where is my pen?how strange!It________(be)here just a moment ago.(用所给动词的适当形式填空)

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Where is my pen?how strange!It________(be)here just a moment ago.
(用所给动词的适当形式填空)

was (a moment ago 是一般过去式标志词)

was 表示刚才还在,用在第一,三人称.
were用在第二人称.

was 表示刚才还在