Question

Seleccione usando el presente perfecto

2. since 6 a.m. has we been at work *

A. Sarah have been at work since 6 a.m.
B. Sarah has been at work since 6 a.m.
C. Sarah has been not at work since 6 a.m.

Answer 1

Respuesta:

La opción correcta es la B.

Sarah has been at work since 6 a.m.

Explicación:

El presente perfecto afirmativo con tercera persona:

Sujeto + Has + Verbo en participio pasado + Complemento.