Some words are easy to mix up. Can you make the right choice? There were several...

Question

Some words are easy to mix up. Can you make the right choice?
There were several similarities / similarly / similar to between the two novels, except one was aimed at a younger market while the other targeted twenty-somethings.
Compared / Compare / Comparing with 15 years ago, home PCs are cheaper, faster, and have a much bigger memory.
The new software program shared some common characters / characterizes / characteristics with those that were already on the market.

Answer 1

There were several similarities to between the two novels, except one was aimed at a younger market while the other targeted twenty-somethings.
Compared with 15 years ago, home PCs are cheaper, faster, and have a much bigger memory.
The new software program shared some common characteristics with those that were already on the market.