They sold the car _______ we thought was a very high price.

问题描述:

They sold the car _______ we thought was a very high price.

which that均可,可把I thought插入语删掉,明显这是定语从句,指the car

at which
they sold the car at (which we thought was) a very high price.
at a very high price以很高的价格
which这里指代价格
仅供参考~

for/at which 定语从句

He sold the house at/for a good price.
他以很高的价钱卖了那所房子.
I bought this watch at a low price.
我以便宜的价钱买了这只表

at which 表示那价格