In the text, Sammy is
Dear Frank,
I am sorry, I missed your party _____ Friday.
I could not come _______ I had to take my cousin ______ the airport.
I tried to phone you ______ you were out. I hope the party went well.
Yours, Sammy
Dear Frank,
I am sorry, I missed your party _____ Friday.
I could not come _______ I had to take my cousin ______ the airport.
I tried to phone you ______ you were out. I hope the party went well.
Yours, Sammy