1) Put the sentences into the negative and interrogative:
a) Cows transform raw materials.
N- ________________________________________________________
I- ________________________________________________________
b) Burps release methane gas.
N- ________________________________________________________
I- ________________________________________________________
c) He finds gases in the atmosphere every day.
N- ________________________________________________________
I- ________________________________________________________
d) Your father works in that school.
N- ________________________________________________________
I- ________________________________________________________