题文
---_________ the door, please.
---Please come in. The door________.
| A．Be open; opens | B．Be open; is opening |
| C．Open; is opening | D．Open; is open |
---_________ the door, please.
---Please come in. The door________.
| A．Be open; opens | B．Be open; is opening |
| C．Open; is opening | D．Open; is open |
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