3번 사진묘사에서,

on the right side of the picture, a man is explaining something
and he is wearing a white shirt
in the middle of the picture, some people are raising their hands
behind them , a woman is looking at him
이렇게 해도 될까요 ?
그리고 여자표현이 생각 안날때, there is a woman behind them 이라고 해도 맞는 표현인가요?

4번 문제에,

on the left side of the picture, a woman is writing something on the paper
she is wearing a lab coat
on the right side of the picture, a man is looking at something with a microscope
he is wearing a lab coat, too
in the foreground of the picture, there are many experiment equipment
이렇게 해도 될까요 ?