The dentist()the children's teeth twice a year.A inspects B operates C watches Dexplores为什么BD不行
问题描述：
The dentist()the children's teeth twice a year.
A inspects B operates C watches Dexplores
为什么BD不行
答
inspect作检查的意思,operate是经营、运作的意思,explore探索、探险
从意思理解是牙医一年检查两次小孩的牙齿.