1.  It was the drug that (kill) Paola. She still (be) alive today if she (not take) that drug.

2.  Dr. Robbins never patented his invention. If he (patent) it he (make) a lot of money.

3.  I (not recognise) Doris at first because she (wear) sunglasses. If she (not wear) them I (recognise) her immediately.

4.  My nephew Freddy (be) never interested in games. If he (play) games like the other boys he (be) happier at school.

5.  Our sister (refuse) the job in spite of the high salary. She (refuse) even if the company (offer) her twice as much.

1.  If I (realise) how awful this job was going to be I (not accept) it.

2.  If Mario (pay) the 500-dollar fine he (not be) sent to prison.

3.  If my girlfriend's passport (be) all right she (not be) arrested in Austria.

4.  A: You (know) that horse was going to win!
     B: Don't be so stupid! If I (know) I (support) him myself.

5.  We (have) to stand all the way to the beach. If Lucy (book) seats, as I told her to do, we (have) a comfortable journey instead.