When did kids come back from their holiday? (прошедшее время)
School will start on the 15th, so a week earlier(будущее время)
Sue is looking for a new flat AT THE MOMENT(present continuous, на это указывает то, что я выделила капсом. Маркер времене, так скажем)
Has she find anything YET?(маркер указывающий на present perfect выделен капсом)
Does Irina study in her room?
Yes, she does her homework
I sometimes help cook dinner for our family.
или
He sometimes helps his mother to cook dinner.