题文
268. The limited supply of water has been put into practice, take care to turn off the running ____ before you leave.
| A．radio | B．traffic lights | C．gas | D．Tap |
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268. The limited supply of water has been put into practice, take care to turn off the running ____ before you leave.
| A．radio | B．traffic lights | C．gas | D．Tap |
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