'has just responded' is correct and usable in written English.
You can use it to describe an action that someone recently completed or performed. Example: She has just responded to the email.
A SITA spokesperson has just responded to the green group position that incinerators block the growth of recycling, basically saying that there is enough to go around.
Aaron Craft had a rough go of it during that stretch, but has just responded with a driving and-1 basket and free throw to put the Buckeyes back up 1 with just around three minutes left.
The narrator has just responded with incredulity to the man's claim that soon after the death of Farida's first husband, her second husband dies in bed on their wedding night.
Updated at 5.36pm BST 4.14pm BST A SITA spokesperson has just responded to the green group position that incinerators block the growth of recycling, basically saying that there is enough to go around.
6.20pm: The Guardian's Martin Chulov is in Baghdad and reports from there on the delayed reaction to the US leaks: After a day's silence, Iraq has just responded to the US embassy cables.
Microsoft's head of communications, Frank Shaw, has just responded to Google's "extortion" claims — on Twitter, of course.
