she was ___(serve)in the kithen when i went home 括号里填啥
问题描述:
she was ___(serve)in the kithen when i went home 括号里填啥
答
serving 用过去进行时,结构:was/ were + doing
she was ___(serve)in the kithen when i went home 括号里填啥
serving 用过去进行时,结构:was/ were + doing