Как раскрыть скобки тут? "the police (not to find) the boy yet. he (to disappear) 3 days ago. tom (not to study) much this thrum ester". заранее большое !

The police hasn't found the boy yet.He disappeared 3 days ago

Tom isn' studying much this thrimester

The police hasn't found the boy yet. He disappeared three days ago. - Полиция ещё не нашла мальчика. Он исчез 3 дня назад.
Tom hasn't study much this semester. Том не много учился в этом семестре.