题文
【2013浙江舟山、嘉兴】Drivers ________ wear seat belts while theircars are running on the road.
| A．need | B．can | C．must | D．may |
【2013浙江舟山、嘉兴】Drivers ________ wear seat belts while theircars are running on the road.
| A．need | B．can | C．must | D．may |
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