Why don't you change your car for a new one?It still runswell ___ it's old

Why don't you change your car for a new one?It still runswell ___ it's old
Why don't you change your car for a new one?It still runswell ___ it's old

Why don't you change your car for a new one?It still runswell ___ it's old
Why don't you change your car for a new one?It still runs well _though__ it's old.应该是让步状语 从句 所以填 though

It still suns well. But it's old.
大意：为什么不换辆新车呢？
-它还跑的很好啊
-但是它很旧啦

你为什么不换