--- Long time no see!
--- I’ve just returned. I _______ to Beijing for a meeting last month.
| A．am sent | B．was sent |
| C．am sending | D．was sending |
--- Long time no see!
--- I’ve just returned. I _______ to Beijing for a meeting last month.
| A．am sent | B．was sent |
| C．am sending | D．was sending |
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