Question

(d) Active : They had closed the window.
Passive: The window
closed by them.
(1) has been
(2)have been
(3)was
(4)had been​

Answer 1

Answer:

4)had been

Explanation:

The window hadbeen closed by them.

Hopeithelps

Answer 2

Answer:

4)had been

Explanation:

when we convert active into passive of past perfect, then had is converted into had been