用括号所给单词的适当形式填空1,jack's bike【 】【be】under the tree a moment ago,but【 】【be not】there now

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用括号所给单词的适当形式填空
1,jack's bike【 】【be】under the tree a moment ago,but【 】【be not】there now

was isn't

was ,is not

were isn't 前一句表过去,后一句表现在

was isn't

was,isn't

is it is not 望采纳(*^__^*) 嘻嘻……