Thereweresomechairsleftover

問題詳情：

There were some chairs left over _____ everyone had sat down.

  A. when                     B. until                         C. that                    D. where

【回答】

A

解析：題意是“當大家坐下後，還有一些椅子剩下”。

知識點：狀語從句

題型：選擇題