--- I wonder _____________without water.
---About a week.
| A．how long man can live |
| B．how long can man live |
| C．when man can live |
| D．when can man live |
--- I wonder _____________without water.
---About a week.
| A．how long man can live |
| B．how long can man live |
| C．when man can live |
| D．when can man live |
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