4. Fill in the gaps with the correct prepositions: in, by, at, under. 1. As a matter of fact, Tom operated best when he was ... pressure.

Задание: Заполните пропуски правильными предлогами: in, by, at, under.

1. As a matter of fact, Tom operated best when he was under pressure.

Объяснение: Здесь подходит предлог "under", так как "under pressure" означает "под давлением".

Ответ: under