Question

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Answer 1

Explicación:

B. Were many people there at the bus station?

C. You were the last concert at night?

Answer 2

Respuesta:

B. there were many people at the bus station?

C. were you at the concert last night?

Explicación:

B. there were many people at the bus station? Habia mucha gente en la estación del bus?

C. were you at the concert last night? - Estuviste en el concierto anoche?

There is / There are se usa para indicar la existencia de algo. En forma de pregunta  cambia a Was ther / Were There

En la otra oración, were you at the concert last night?

hay que recordar que el verbo va antes del pronpombre y la estfructura es:

Verbo + pronombre + complemento?