Mark the alternative that correctly fills in the blanks in t...

Mark the alternative that correctly fills in the blanks in the following quote respectively with the simple past of the verb TO HUM, the past perfect of the verb TO FORGET, and the simple past of the verb TO BE.

“On his desk, a huge old electric typewriter ______¹ — he ______² to turn it off. He was among the many word-processing holdouts in the literary world. The typescript ______ ³ right there, in a neatly squared-off pile, six hundred pages — long, but not vast.” (Ian McEwan)