They haven't got (a)   money for a burger.

This coffee is (a)   hot to drink!

She isn't tall (a)   to climb over the wall

There isn't (a)   time for me to do this homework!

My teacher drinks (a)   much coffee.

It's so cold! Are you wearing (a)   ?

We use " (a)   " when the amount is sufficient/just right.

We use " (a)   " when there is less than or more than what is sufficient.