just or just now?

[keannu]

Dear sir or madam!
Please answer my question below.

My grammar books says the question match only the answers.

1. I met his wife ______________ : (in 2004, last night, three months ago, just now)

2. She has ___________ finished the book. : (already, just).

Doesn't it make sense? "I just met his wife", but probably not "I met his wife just" that I have never heard of.
"Just now" seems to go with the present, why does it goes with the past?

[TheNewOne]

As far as I know just now is used with Past Simple and just is used with Present Perfect.

[5jj]

1. I met his wife ______________ : (in 2004, last night, three months ago, just now)

All the answers are possible.

2. She has ___________ finished the book. : (already, just).

Both the answers are possible.

"Just now" seems to go with the present, why does it goes with the past?

Both just and just now can have a number of slightly different meanings; the context normally makes things clear.

She (has) just finished the book. = a fairly short time ago, or even at the moment of speaking. The present perfect is more normal in BrE, the past simple common in AmE.
He arrived just as I was leaving. = at precisely the same moment.
Sorry, I'm working just now. = at this present moment.
I saw her just now. = a short time ago.

[BobK]

There's also a dialectal variant that has nothing to do with the tense of its ver b(or at least - one that I wasn't aware of when a friend of mine used to say 'Cheerio just now' at the end of a conversation. (She was Scottish; I think it meant '...but I'll see you again soon'.)

b