The boy’s parents were very __ ___(thank) to the policeman because of his help.

问题描述:

The boy’s parents were very __ ___(thank) to the policeman because of his help.

thankful

thankful
前面有be动词were,用形容词形式

The boy’s parents were very __ ___(thank) to the policeman because of his help.
答案:thankful,整句话的意思为这个男孩的父母因为警察的帮助非常感谢他.也可翻译成“这个男孩的父母对于警察的帮助很感激”.

thankful