问题
补全对话，情景问答
| 选择正确的单词，将对话补充完整，将序号填在横线上。 | |
— It comes from the ____________. 2. — Where does the clouds come from? — It comes from the ____________. 3. — Where does the vapour come from? — It comes from the ____________. |
答案
1. B D 2. A 3. C