[Grammar] the only thing

[Will17]

Hello!

What is the correct structure after "the only thing/all I want is"?

The only thing/all I want is:

-do
-to do
-doing something.

Thank you
>W

 

[bhaisahab]

Hello!

What is the correct structure after "the only thing/all I want is"?

The only thing/all I want is:

-do
-to do
-doing something.

Thank you
>W

All I want is sleep.
All I want to do is sleep.
The only thing I want is sleep.
The only thing I want to do is sleep.