misc

The tasks (different) from each other

The (difficult) of this task is very high.

There is a (different) between life and death

This exercise is very (use). I learned a lot from it

The (use) of textbooks is forbidden during the exam

This car is (use). I can't drive it

(Science) have discovered a new chemical element

They're doing (science) research

This IT product has long been in (develop)

These are (develop) countries