6. Use in, on, at in the following sentences (Write only the correct prepositions): 15. He is writing ___ the moment. 16. Jack is ___ the room. 17. We have Maths ___ Wednesday, Friday and Saturday.

Перевод задания: Вставьте правильные предлоги in, on или at.

1. He is writing at the moment. (Он пишет в данный момент.)
2. Jack is in the room. (Джек находится в комнате.)
3. We have Maths on Wednesday, Friday and Saturday. (У нас математика по средам, пятницам и субботам.)

Ответ: at, in, on.