父母过度保护年幼的孩子是很自然的。

It is natural for parents to be overly ___protective of their young children.

结婚多年后，她仍然 fiercely 保护着她的丈夫。

She remains fiercely ___protective of her husband after many years of marriage.

他非常保护他的朋友，总是为他们挺身而出。

He is very ___protective of his friends and always stands up for them.