(Vary) peoples live here

(a)  

The enthic (vary) of people in this city is astonishing

(a)  

There are (count) books in this library

(a)  

Can you (count) the number of people on the bus?

(a)  

They have started an (explore) expedition

(a)  

The (explore) of new cities is quite intersting

(a)  

They are poor and really (success)

(a)  

He's rich and very (success)

(a)  

They (success) in everything they do

(a)  

These are (develop) countries

(a)  

This IT product has long been in (develop)

(a)  

They're doing (science) research

(a)  

(Science) have discovered a new chemical element

(a)  

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

(a)  

The (use) of textbooks is forbidden during the exam

(a)  

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

(a)  

There is a (different) between life and death

(a)  

The tasks (different) from each other

(a)  

The (difficult) of this task is very high.

(a)