Re-write the sentences. Use "may" or "may not".
Example: It's possible that it will rain tomorrow -> It may rain tomorrow.
It's possible that Ryan will come here.
It's possible that we won't go to the beach.
It's possible that we will watch a DVD.
It's possible that my parents won't be here.
It's possible that James will join us.
It's possible that we will not stay at home.