题目内容
词汇运用,根据句意,用所给单词的适当形式填空。
He ________(be)a volunteer in Ya-an, Sichuan since the earthquake happened.
答案:
解析:
解析:
|
has been |
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题目内容
词汇运用,根据句意,用所给单词的适当形式填空。
He ________(be)a volunteer in Ya-an, Sichuan since the earthquake happened.
|
has been |