Fill in the blanks using the correct tense (of the verb):
When I _____ (open) the door, I ____ (see) a man on his knees. He _____ (listen) to our conversation and I ____ (wonder) how much he ______ (hear)
1
open; see; listens; wondered; heard
2
opened; saw; had been listening; wondered; had heard.
3
opened; saw; has been listening; wonder; has heard.
4
opens; sees; listen; wonder; hears.