18. Do or make
a. The earthquake make wouldn't have done any damage if it is hadn't been so big.
b. Sam does well in his exam if he studies.
c.More Karen make the phone call if she isn't leave her phone at home.
d. If Paul make fun of his brother, his mother buys him a computer.
e. Maureen isn't does a lot of progress if she isn't works hard.
f.The company do business with their Italian partners if the are serious.
g. If Jack make an appointment,the doctor see him.
h. The French make peace if the English gets the two colonies.
i. He isn't does a fortune if his father's business isn't profitable