Question

a- He / 14 years old.
(+)
(-)
(?)
b- They / at school.
(+)
(-)
(?)
c- Mary / a pilot.
(+)
(-)
(?)
d- The elephant / grey.
(+)
(-)
(?)
e- You / tired.
(+)
(-)
(?)

Answer 1

a) He is 14 years old (+)
He is not 14 years old (-)
Is he 14 years old? (?)

b) They are at school
They are not at school
Are they at school?

c) Mary is a pilot
Mary is not a pilot
Is Mary a pilot?

d) The elephant is grey
The elephant is not grey
Is the elephant grey?

e) You are tired
You are not tired
Are you tired?

Espero haberte ayudado!!