題目列表(包括答案和解析)
They______ when the teacher came in.
| A．talk | B．are talking | C．to talk | D．were talking |
They______ when the teacher came in.
A．talk B．are talking C．to talk D．were talking
| A．talk | B．are talking | C．to talk | D．were talking |
句型轉換
They were talking when their teacher came in. (對畫線部分提問)
________ ________ they ________ when the teacher came in?
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