Question

2. My wife must be tired. She___ for 11 hours.
a) am sleeping
b) has been sleeping
c) will have been sleeping
d) will be sleeping

Answer 1

My wife must be tired.  She (b) has been sleeping for 11 hours.

Se usa el presente perfecto continuo, porque es una acción que comenzó en el pasado y sigue en progreso en el presente.

Saludos!

Atentamente,

$\mathbf{\Huge{TREAD_{ON_{ME}}\bowtie}}$