观光巴士会带我们游览城市的主要景点。

The ___sightseeing bus will take us to the main places in the city.

我们喜欢在假期去观光。

We like to go ___sightseeing on holiday.

观光是我最喜欢的旅行活动。

___Sightseeing is my favourite activity when I travel.