Answer
a) If the wind blows from the northeast, then it snows.
b) If it stays warm for a week, then the apple trees will bloom.
c) If the Pistons win the championship, then they beat the Lakers.
d) If you make it to the top of Long's Peak, then you walked 8 miles to get there.
e) If you are world-famous, then you will get tenure.
f) If you drive more than 400 miles, then you will need to buy gasoline.
g) If you bought your CD player less than 90 days ago, your guarantee is good.
h) If the water is not too cold, then Jan will go swimming.
Work Step by Step
Each of these sentences have two clauses, which are connected by a phrase that sets up a direction for an "if p, then q" structure.