Question

a frase: service learning, for example, has become a mainstay of many american secondary schools. no past perfect seria:
a) service learning, for example, has becomed a mainstay of many american secondary schools.
B) service learning, for example, had become a mainstay of many american secondary schools.
C) service learning, for example, had becomed a mainstay of many american secondary schools.
D) service learning, for example, has become a mainstay of many american secondary schools.​

Answer 1

Resposta:

Letra C

Explicação:

A estrutura do past perfect

O past perfect é formado por uma estrutura simples, utilizando had e o particípio do verbo principal. Podemos identificar isso nos exemplos anteriores:

The movie had already started when we arrived.

They had already moved to Atlanta when I traveled to New York.

She had already had dinner when I invited her out.