问题描述：
用be动词适当形式填空（急）
I at school just now
He at the camp last week
We students two years ago
They on the farm a moment ago
The mobile phone on the chair yesterday evening
I at school just now
He at the camp last week
We students two years ago
They on the farm a moment ago
The mobile phone on the chair yesterday evening
问题解答：
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