Thetrafficrulesaysyoungchildrenundertheageoffourand

問題詳情：

 The traffic rule says young children under the age of four and ______ less than 40 pounds must be in a child safety seat.

      g weighed   B. to weigh  C. weighed   D. weighing

【回答】

D

知識點：非謂語動詞

題型：選擇題