The given Pictures depict 
Linking Words
Overall
 Procedure of, how Correct article usage
the Overall
cement
 is made as well Use synonyms
how
 it Correct word choice
as how
get
 mixed with other stuff for making concrete, which is going to be used in Change the verb form
gets
building
 making process.
As can be seen from the Picture of Correct article usage
the building
Use synonyms
cement
 ProductionCapitalize word
Cement
 that
, it has 4 steps to reach Correct pronoun usage
apply
cement
 into bags. Use synonyms
Cement
 is the mixture of the powder of Use synonyms
limeston
 Correct your spelling
limestone
as well as
 Clay. In the first Linking Words
step
, Use synonyms
that 
both ingredients Correct word choice
apply
got
 crushed by Verb problem
were
crusher
 and Correct article usage
a crusher
become
 Wrong verb form
became
the 
powder and Correct article usage
apply
then
 went Linking Words
to
 Change preposition
into
mixer
, where both Add an article
the mixer
a mixer
mixed
 well. Add a missing verb
were mixed
The next 
Linking Words
step
 is to get Use synonyms
heater
 in the rotating heater which is the second Correct article usage
the heater
last
 Linking Words
step
. Use synonyms
Final
 Add an article
The final
step
 is to grind in Use synonyms
grinder
 and Add an article
a grinder
the grinder
then
 Linking Words
packed
 into bags.
Wrong verb form
pack
According to
 Linking Words
concrete
 production image, there are Correct article usage
the concrete
total
 Correct article usage
a total
four
 ingredients needed for making concrete. Gravel which is Small Stones, Change preposition
of four
which 
is used 50% Correct pronoun usage
apply
in
 the process and sand Change preposition
of
by 
half of it 25%. Change preposition
apply
Cement
 is 15% needed and water Use synonyms
by 
10% which is the least one in process Change preposition
apply
then
 all get mixed Properly in Linking Words
concrete
 mixer.Add an article
a concrete
the concrete