Question

我要努力学习，不让老师父母失望。

I’ll study hard, and I won’t ___________________________.

Answer

disappoint my parents and teachers / let my parents and teachers down

【解析】

根据汉语和所给的英语提示可知，此处缺少了“不让老师父母失望”的翻译。让某人失望：let sb. down或者用disappoint sb.。disappoint是个及物动词，后接sb.，表示“使某人失望”。老师父母：my parents and teachers。won't后面接动词原形。故填disappoint my parents and teachers / let my parents and teachers down。