—Can you tell me what time the flight to Detroit leaves?
—I’m sorry, but it _______________.
| A．has been canceled | B．had been canceled |
| C．has canceled | D．had canceled |
相关试题
—You didn’t invite John to the party?
—______him,too?
| A．Should I invite | B．Should I have invited |
| C．Must I invite | D．Must I have invited |
She told me that her father______to the post office when I arrived.
| A．just went | B．has just gone |
| C．had just gone | D．had just been going |
By the time he was ten,Edison______experiments in chemistry.
| A．had already done | B．already had done |
| C．was already doing | D．already did |
______,the boy couldn’t enter his house.
| A．Since the key had lost | B．T he key being lost |
| C．Lost the key | D．Having lost the key |
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