7) M always asks me to help her with the dinner: only if she is really tire often

В данном предложении необходимо выбрать подходящее слово, чтобы оно сочеталось с остальной частью предложения.

Подставим варианты:

1. M always asks me to help her with the dinner: only if she is really tire often

Предложение имеет смысл.

Ответ: M always asks me to help her with the dinner: only if she is really tire often