Sentence Structure Questions

Hello,

I just need some clarification on a couple of sentences. I have eliminated obvious bad choices but these are a bit confusing to me. I put a * next to what I believe is best, but I'd like second opinions. Thanks in advance for your help!

Which of the following pairs is more correct:

Pair 1:

*If you visit Mom for Christmas, don't forget your iPod.

If you visit mom for Christmas don't forget your iPod.

Pair 2:

Drugs that are commonly abused by persons in the United States include alcohol, marijuana, crack, and even over the counter medications like cough syrup.

Drugs that people in the United States commonly abuse include alcohol, marijuana, crack and even over-the-counter medications like cough syrup.