Американские учителя озабочены тем,

Американские учителя озабочены тем, что их ученики отстают от своих сверстников в Европе по многим предметам

Результаты (английский) 1:

American teachers are concerned that their students lag behind their peers in Europe on many subjects

Результаты (английский) 2:

American teachers are concerned that their students lag behind their peers in Europe in many subjects

Результаты (английский) 3:

american teachers are concerned that their students are falling behind their peers in europe on many subjects