Comparative: more useful Superlative: most useful
more useful, the most useful
is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us?
Fuels are useful to us. It is useful to us because we use it for our cars
It allows us to see the wonderful art forms of the ancient past of Egypt. As such it is a world cultural icon.
Because the are useful to us in many ways
We inhale oxygen for breathe. Also, animals and plants depend on it as well. It forms atmosphere so that air can stay on Earth and also a need of fire.
Gorillas are useful towards us humans because it gives us an idea on our ancestry.
plutonium
Virtually all forms and types of energy are useful in some way or another.
lots of animals are useful to us because we eat them to live.
it is useful because it is useful to us because because because because because because because