I don't understand, doesn't 'just' mean that it is alredy in the market justnow?

[StJordi]

English Language Tests, Intermediate level

ESL/EFL Test #255 "Irregular Verbs Test (3)", question 2

Microsoft just ......... out with a new software program. It's on sale at that office supply store down the road.

(a) came
(b) come
(c) comes

English Language Tests, Intermediate level

ESL/EFL Test #255 "Irregular Verbs Test (3)", answer 2

Microsoft just came out with a new software program. It's on sale at that office supply store down the road.

Correct answer: (a) came

Your answer was: incorrect
Microsoft just come out with a new software program. It's on sale at that office supply store down the road.
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I don't understand,doesn't "just" mean that it is alredy in the market justnow?

[Mister Micawber]

Yes, it does. It is in the market now, so it came out before now (very recently).
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Native English teacher at Mister Micawber's

[P_Chanlee]

Why "came" is correct? Please give me more explaination.

[Mister Micawber]

Hello, P Chanlee,

I'm afraid you'll have to be more specific about your concern. Why do you think 'come' or 'comes' may be correct? The action is in the past.
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Native English teacher at Mister Micawber's