Question

Пожалуйста помогите поставить в разные формы глагольного имени:
Я вчера купил щенка (P.S.) (positive,negative,qvestion)
Мой сын читал книгу в это время(P.C.)
(positive,negative,qvestion)
Ученики написали тест к этому времени(P.C.)
(positive,negative,qvestion)

Answer 1

I bought a puppy yesterday
I didn't buy a puppy yesterday
Did you buy a puppy yesterday?

The pupils had written the test by this time
The pupils had not written the test by this time
Had the pupils written the test by this time?