1.
The small child does whatever his father was done.

2.
You need not come unless you want to.

3.
There are not many men who are so famous that they are frequently referred to by their short names only

4.
The man to who I sold my house was a cheat.

6.
I need not offer any explanation regarding this incident - my behaviour is speaking itself.

7.
He is too important for tolerating any delay.

8.
The population of Tokyo is greater than that of any other town in the world.

9.
The performance of our players was rather worst than I had expected.

10.
Why did you not threw the bag away?