（浙江卷20）. The traffic rule says young children under the age of four and __ less than 40 pounds must be in a child safety seat.
| A．being weighed | B．to weigh | C．weighed | D．weighing |
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（浙江卷20）. The traffic rule says young children under the age of four and __ less than 40 pounds must be in a child safety seat.
| A．being weighed | B．to weigh | C．weighed | D．weighing |
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