can i use a o2 sensor with 4 wires to a car with one wire?

Nope.

The 4 wires are there for a reason ... some of the wires go to the heater that brings the O2 up to temp ... without that it woudln't give an accurate reading.

then what year or engine do i take it from?

What car are you asking about?

Your screename implies you have a turbo MR2 which has a 4-wire O2 ... what car are you asking about 1-wire O2s for?

My mr2 only has a 1wire 02 sensor.Should it not?

You have a Turbo MR2?
You absolutely should have the 4-wire sensor.

Well its a JDM turbo. Well what should I do then?

I have no idea if the JDMs are different.

ok thanks i will try to ask around

do you know of anyone that can help me because i have been looking around for a while with no luck