Question

1)"you studied math yesterday "
a frase acima na forma interrogativa encontra-se em:
a) did you studied math yesterday?
b) you studied math yesterday?
c) did you study math yesterday? d)you study math yesterday?

Answer 1

A alternativa correta seria C.

Answer 2

Alternativa C, pois o did já está no passado e não precisa deixar o verbo (study) no passado