Question

はかな

高3 英語表現です。

Previous studies have found that people who live near trees and parks have lower levels of stress than those who live mainly surrounded by concrete. It was not possible until recently to study the brains of people ( ) they were actually outside, moving through the city and the parks. Now, however, a light, portable version of a technology that studies brain wave patterns has been developed.

①while ②since ③until ④before

( )に入る適切な語はどれかという問題です。
その一文の日本語訳とともに答えを教えていただきたいです。

Answer 1

✨ 最佳解答 ✨

高橋

街の中や公園の中を移動しながら、実際に屋外にいる人々の脳の状態を調べることは、最近まで不可能でした。
①while

はかな

ありがとうございます！！