I don’t have any brothers _______ sisters.
--- Thanks for listening to my problem and giving me your advice, Amy. ---______. That’s what friends are for.
Tom has just finished writing a ______ article.
–How long has Robert ________? --Since 2004.
--Why do you want to stay at home? --Because I ________ good when I am with my family.
______ is dangerous for children to swim in the river alone.