找出并改写下类各句中可用“THE”代替的指示代词

those workers are in the factory
this is the red apple
the pencil is in that pencil case
are these the good doctors
where are the cats
these are the stppers
the big red apple is very sweet
what colour is the coat?
is the nice ice-cream?
is the scarf your mother's?
Is this your bag?Yes,it is.
Are these Miss Yang's?Yes,they are.
Is this scarf your mother's?Yes,it is.
Is the pen Marry's?Yes,it is.
Are those books Mike's?Yes,they are.
The red pen is bigger than that one.
Mike is taller than Jim.
Mary is fatter than Linda.
The white hat is smaller than the red one.
Math is more boring than English.

i don't know

第三句the pencil is that pencil case
第七句the big red apple is uery sweet