To ride a bike with one hand is dangerous. It is ....
It is dangerous to ride a bike with one hand.
To communicate with him is difficult. It is ...
It is difficult to communicate with him.
To lie to one's own parents is a big mistake. It is...
It is a big mistake to lie to one's own parents.
To buy both watches will cost me a lot of money. It...
It will cost me a lot of money to buy both watches.
That smoking is bad for your health is a fact. It ...
It is a fact that smoking is bad for your health.
That you tell me the whole truth is very important. It is..
It is very important that you tell me the whole truth.
What he had done to us was unfair. It...
It was unfair what he had done to us.
He is stupid to say such a thing. It ...
It is stupid of him to say such a thing.
You are kind to let me share the seat with you. It is...
It is kind of you to let me share the seat with you.
To work with Dr. Lee is a good idea for him. It is...
It is a good idea for him to work with Dr. Lee.
To review the whole lesson is necessary for you. It is...
It is necessary for you to review the whole lesson.
Complaining to her is useless. It is ...
It is useless complaining to her.
Asking Bob for help would be a waste of time. It...
It would be a waste of time asking Bob for help.
Whether he quit or not made no difference to the boss. It ...
It made no difference whether he quit or not.
That he got married surprised everybody. It...
It surprised everybody that he got married.
You are foolish to put all your money in one place. It ..
It is foolish of you to put all your money in one place.
