(一):I have always wanted to do that.

那是我一直想去的。

A: What about the, Ming Tomb?
十三陵怎么样？
B: That's a great idea. I have always wanted to do that.
好主意，那是我一直想去的。

It is a city I've always wanted to visit.

这是我一直想去的城事。

I've been thinking about Qingdao.

我一直想去青岛。

(二):It takes twenty minutes to go there by car.

开车去那里要二十分钟。

A: It takes twenty minutes to go there by car.
开本去那里要二十分钟。
B: Not very faraway.
不是很远嘛。