Question

1. I knew that she ... In hospital.
A) was
B) has been
C) is
D) had been
2. I knew that she ... in hospital the week before.
A) was
B) has been
C) is
D) had been
3. I know that she ... in hospital.
A) was
B) has been
C) is
D) had been

Answer 1

1 was
2 was
3. was
Я перевела и мне кажется что везде (was)

Answer 2

was или had been
had been
was