Nowadays more and more people regard traveling as part of their life, and Chinese transport has been strengthened for the holiday travel ____.
I can't say which type of tea tastes better. It's just a(n) ________ of personal preference.
Listening to music can be very enjoyable, but ________ can be appreciated unless you like it.
The cultural background of China is totally different from ________ of the US.
The teacher praised me for ________ progress I'd made, which was ________ great encouragement to me.
As ________ birthplace of Huaxia civilization, Xi'an is ________ city with a long history and abundant cultural relics.