ingenuous

他天真的提问显示出他对这个复杂世界的一无所知。

His ___ingenuous questions revealed his complete lack of knowledge about the complex world.

这位新实习生以她天真热心的态度赢得了所有人的好感，她从不怀疑会有人占她便宜。

The new intern won everyone over with her ___ingenuous willingness to help, never suspecting anyone might take advantage of her.

他坦率地承认自己从未读过公司手册，这让人力资源经理露出了愕然的表情。

His ___ingenuous confession that he had never once read the company handbook drew astonished looks from the HR manager.