saw vs see

[Dima]

English Language Tests, Intermediate level

ESL/EFL Test #262 "Irregular Verbs Test (10)", question 1

I ......... a great movie on Friday night. I think it's still playing at the movie theater. You should go see it soon.

(a) see
(b) saw
(c) seeing

English Language Tests, Intermediate level

ESL/EFL Test #262 "Irregular Verbs Test (10)", answer 1

I saw a great movie on Friday night. I think it's still playing at the movie theater. You should go see it soon.

Correct answer: (b) saw
_________________________

Please explain: saw vs see.

Dima

[Lost_Soul]

It's simplisity itself, Watson

See - Present form
Saw - Past form ( it has also 2 other meanings - so you'd better refer to any available dictionary, like this one http://dictionary.cambridge.org/ )
You need here the past form cause the action being described happened in the past.

Get it?