Please mark the main clause that best completes the if-clause.

1. If he doesn't pay back the money by tomorrow, I

will pay him a visit.
will paid him a visit.
will have paid him a visit.
will have been paying him a visit.


2. If we hadn't put in the storm windows, the hurricane

will break every windowpane in the house.
will have broken every windowpane in the house.
would break every windowpane in the house.
would have broken every windowpane in the house.


3. If I had a million dollars, I

will give it all to charity.
would give it all to charity.
would have given it all to charity.
will never give it away.


4. If the cow hadn't fallen off the roof, we

won't have to clean the driveway now.
wouldn't have to clean the driveway now.
wouldn't have had to clean the driveway now.
weren't have to clean the driveway now.