He used to walk to school.(保持原意基本不变) He ______ _______ to schoool before.
问题描述:
He used to walk to school.(保持原意基本不变) He ______ _______ to schoool before.
答
often walked
He used to walk to school.(保持原意基本不变) He ______ _______ to schoool before.
often walked