- To sort out stamps is interesting.
It is interesting to sort out stamps.
- To learn a foreign language in a week is impossible.
It is impossible to learn a foreign language in a week.
- It is tiring to walk more than 5km.
Walking more than 5km is tiring.
- To speak French is easier than to speak English.
It is easier to speak French than to speak English
- To have you at my party is happy.
It is happy to have you at my party.
- To know how to live well is not easy.
It is not easy to know how to live well.
- It is funny to buy things you don’t need.
Buying things you don’t need is funny.
- To speak English fluently is not very difficult.
It is not very difficult to speak English fluently.
- It is wonderful to go to the beach in Summer.
Going to the beach in summer is wonderful.
- It is meaningless to sing without understanding the lyrics.
Singing without understanding the lyrics is meaningless.