题文
Lots of rescue workers were working around the clock，__________ supplies to Yushu, Qinghai Province after the earthquake.
| A．sending |
| B．to send |
| C．having sent |
| D．to have sent |
推荐试卷
Lots of rescue workers were working around the clock，__________ supplies to Yushu, Qinghai Province after the earthquake.
| A．sending |
| B．to send |
| C．having sent |
| D．to have sent |
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